Dell OptiPlex 5055 Tower Owner's Manual Regulatory Model: D18M Regulatory Type: D18M004
Notes, cautions, and warnings NOTE: A NOTE indicates important information that helps you make better use of your product. CAUTION: A CAUTION indicates either potential damage to hardware or loss of data and tells you how to avoid the problem. WARNING: A WARNING indicates a potential for property damage, personal injury, or death. © 2018 2018 Dell Inc. or its subsidiaries. All rights reserved. Dell, EMC, and other trademarks are trademarks of Dell Inc. or its subsidiaries.
Contents 1 Working on your computer............................................................................................................................. 6 Safety instructions............................................................................................................................................................. 6 Turning off your computer................................................................................................................................................
Installing intrusion switch.......................................................................................................................................... 30 Power switch.....................................................................................................................................................................31 Removing power switch.............................................................................................................................................
DDR4................................................................................................................................................................................. 55 DDR4 Details.............................................................................................................................................................. 55 Memory Errors............................................................................................................................................
1 Working on your computer Safety instructions Use the following safety guidelines to protect your computer from potential damage and to ensure your personal safety. Unless otherwise noted, each procedure included in this document assumes that the following conditions exist: • You have read the safety information that shipped with your computer. • A component can be replaced or, if purchased separately, installed by performing the removal procedure in reverse order.
Before working inside your computer To avoid damaging your computer, perform the following steps before you begin working inside the computer. 1 Ensure that you follow the Safety Instruction. 2 Ensure that your work surface is flat and clean to prevent the computer cover from being scratched. 3 Turn off your computer. 4 Disconnect all network cables from the computer. CAUTION: To disconnect a network cable, first unplug the cable from your computer and then unplug the cable from the network device.
2 Chassis Front chassis view 1 Power button and power light 2 Hard drive activity light 3 Memory card reader (optional) 4 Optical drive (optional) 5 Headset port 6 USB 2.0 port with PowerShare 7 USB 2.0 port 8 USB 3.
Back chassis view 1 Line-out port 2 DisplayPort 3 Serial port 4 PS/2 keyboard port 5 USB 3.1 Gen1 port 6 USB 2.
3 Disassembly and reassembly Back cover Removing Back Cover 1 Follow the procedure in Before working inside your computer. 2 To release back cover: a b 3 Slide the latch (blue tab) to release the back cover from the computer [1]. Slide the back cover toward the back of the computer [2]. Lift the back cover to remove it from the computer.
Installing cover 1 Place the cover on the computer and slide the cover forward until it clicks into place. 2 Follow the procedure in After working inside your computer. Front Bezel Removing front bezel 1 Follow the procedure in Before working inside your computer. 2 Remove the Back cover. 3 To remove front the bezel: a b Pry the retention tabs to release the bezel from the chassis [1]. Push the bezel away from the chassis [2].
4 Lift the front bezel to remove it from the computer.
Installing front bezel 1 Position the bezel to align with the tab holders on the base of the chassis frame. 2 Press the bezel until the retention tabs click into place. 3 Install the Back cover. 4 Follow the procedure in After working inside your computer. Front panel door Opening the front panel door 1 Follow the procedure in Before working inside your computer. 2 Remove the: a b Back cover Front bezel CAUTION: The front panel door opens only to a limited extent.
Storage device Removing 3.5–inch hard drive assembly 1 Follow the procedure in Before working inside your computer. 2 Remove the: a b 3 Back cover Front bezel To remove hard drive assembly: a 14 Disconnect the hard drive assembly cables from the connectors on the hard drive.
NOTE: Un-route the cables from the clips from the drive cage. b c Open the front panel door. Remove the HDD filler bracket.
d 16 Press the blue tab [1] and pull the hard drive assembly out of the computer [2].
NOTE: The tab may indicate 5.25 inch because you can also install a 5.25 inch hard drive in same drive bay. Removing 3.5–inch hard drive from the hard drive bracket 1 Follow the procedure in Before working inside your computer. 2 Remove the: a b c 3 Back cover Front bezel Hard drive assembly To remove hard drive bracket: a b Pull one side of the hard drive bracket to disengage the pins on the bracket from the slots on the hard drive [1]. Lift the hard drive out of the hard drive bracket [2].
Installing 3.5–inch hard drive into the hard drive bracket 1 Flex the side of the hard drive bracket, to align and insert the pins on the bracket into the hard drive. 2 Insert the hard drive into the hard drive bracket until it clicks into place. 3 Install the: a b c 4 Hard drive assembly Front bezel Back Cover Follow the procedure in After working inside your computer. Installing 3.
Removing 2.5–inch hard drive from the hard drive bracket 1 Follow the procedure in Before working inside your computer. 2 Remove the: a b c 3 Back cover Front bezel 2.5 inch hard drive assembly To remove hard drive bracket: a b Pull one side of the hard drive bracket to disengage the pins on the bracket from the slots on the hard drive [1]. Lift the drive out of the drive bracket [2].
Installing 2.5–inch hard drive into the hard drive bracket 1 Flex the side of the hard drive bracket, to align and insert the pins on the bracket into the hard drive. 2 Insert the hard drive into the hard drive bracket until it clicks into place. 3 Install the: a b c 4 2.5 inch hard drive assembly Front bezel Back cover Follow the procedure in After working inside your computer. Installing 2.
c Press the blue release tab [1] and slide the optical drive out of the computer [2].
Installing optical drive 1 Insert the optical drive into the optical drive bay until it clicks into place. 2 Open the Front panel door. 3 Route the data cable and power cable under the drive cage. 4 Connect the data cable and power cable to the connectors on the optical drive. 5 Close the front panel door. 6 Install the: a b 7 Front bezel Back cover Follow the procedure in After working inside your computer. M.2 PCIe SSD Removing optional M.
3 Open the Front panel door. 4 To remove the M.2 PCIe SSD: a b Pull the blue plastic tab that secures the M.2 PCIe SSD to the system board [1]. Slide the M.2 PCIe SSD from the connector on the system board [2]. Installing optional M.2 PCIe SSD 1 Insert the M.2 PCIe SSD to the connector. 2 Press the blue plastic tab to secure the M.2 PCIe SSD. 3 Close the front panel door. 4 Install the: a b 5 Front bezel Cover Follow the procedure in After working inside your computer.
SD card Removing SD card reader 1 Follow the procedure in Before working inside your computer. 2 Remove the: a b Back cover Front bezel 3 Open the Front panel door. 4 To remove the SD card reader: 24 a b Disconnect the SD card reader cable from the connector on the system board [1]. Remove the screw( 6+/-1) that secures the SD card reader to the front panel door [2]. c NOTE: The screw is beneath the SD card. Lift the SD card reader out of the computer [3].
FInstalling SD card reader 1 Insert the SD card reader into the slot on the system board. 2 Replace the screw(6+/-1) to secure the SD card reader to the front panel door. NOTE: The screw holder is beneath the SD card reader. 3 Connect the SD card reader cable to the connector on the system board. 4 Close the front panel door. 5 Install the: a b 6 Front bezel Back cover Follow the procedure in After working inside your computer.
Expansion card Removing PCIe expansion card 1 Follow the procedure in Before working inside your computer. 2 Remove the: a b Back cover Front bezel 3 Remove the Front panel door. 4 To remove the PCIe expansion card: a b Pull the release latch to unlock the PCIe expansion card [1]. Push the release tab [2] and lift the PCIe expansion card out of the computer [3]. NOTE: The release tab is at the base of the expansion card. 5 Pull the release latch backward to open.
NOTE: To remove the PCIe brackets (2 and 4), push the bracket upwards from the inside of your computer to release it and then lift the bracket away from your computer. 7 Repeat the steps to remove any additional PCIe expansion cards. Installing PCIe expansion card 1 Insert the PCIe expansion card to the connector on the system board. 2 Secure the PCIe expansion card by pushing the card retention latch until it clicks into place. 3 Repeat the steps to install any additional PCIe expansion cards.
5 To remove the PSU: 28 a Press the release tab [1]. b NOTE: Release tab is at the base of the PSU Slide and lift the PSU away from the computer [2].
Installing power supply unit – PSU 1 Insert the PSU into the PSU slot and slide it toward the back of the computer until it clicks into place. 2 Replace the screws( 6+/-1) to secure the PSU to the computer. 3 Route the PSU cables through the retention clips. 4 Connect the PSU cables to the connectors on the system board. 5 Close the front panel door. 6 Install the: a b 7 Front bezel Cover Follow the procedure in After working inside your computer.
Removing intrusion switch 1 Follow the procedure in Before working inside your computer. 2 Remove the: a b Back cover Front bezel 3 Open the Front panel door. 4 To the intrusion switch: a b c Disconnect the intrusion switch cable from the connector on the system board [1]. Un-route the intrusion switch cable from the cable holder. Slide the intrusion switch and push it to remove from the computer [2]. Installing intrusion switch 1 Insert the intrusion switch into the slot on the computer.
5 Install the: a b 6 Front bezel Back cover Follow the procedure in After working inside your computer. Power switch Removing power switch 1 Follow the procedure in Before working inside your computer. 2 Remove the: a b Back cover Front bezel 3 Open the Front panel door. 4 To release the power switch: a b c d 5 Disconnect the power switch cable from the system board [1]. By using plastic scribe remove the power switch cable through the retention clip [2].
Installing power switch 1 Insert the power switch into the slot from the front of the computer and press it until it clicks into place. 2 Align the cable with the pins on the connector and connect the cable. 3 Close the front panel door. 4 Install the: a b 5 Front bezel Back cover Follow the procedure in After working inside your computer. Speaker Removing speaker 1 Follow the procedure in Before working inside your computer.
4 To remove the speaker: a b Disconnect the speaker cable from the connector on the system board [1]. Close the front panel door [2]. c Press the release tabs [1], and slide the speaker module [2] out of the slot.
Installing speaker 1 Insert the speaker into the slot. 2 Press the speaker module until it clicks into place. 3 Connect the speaker cable to the connector on the system board. 4 Close the front panel door. 5 Install the: a b 6 Front bezel Back cover Follow the procedure in After working inside your computer. Coin-cell battery Removing coin cell battery 1 Follow the procedure in Before working inside your computer.
c Expansion card 3 Open the Front panel door. 4 To remove the coin cell battery: a b Using a plastic scribe press the release latch until the coin cell battery pops out [1]. Remove the coin cell battery from the connector on the system board [2]. Installing coin cell battery 1 Hold the coin cell battery with the "+" sign facing up and slide it under the securing tabs at the positive side of the connector. 2 Press the battery into the connector until it locks into place.
Heat sink assembly Removing heat sink assembly 1 Follow the procedure in Before working inside your computer. 2 Remove the: a b Back cover Front bezel 3 Open the Front panel door. 4 To remove the heat sink assembly: 36 a b Disconnect the heat sink assembly cable from the connector on the system board [1]. Loosen the captive screws(6+/-1) that secure the heat sink assembly to the system board [2]. c NOTE: Loosen the screws based on the numbers available on the system board.
Installing heat sink assembly 1 Align the screws of the heat sink assembly with the holders on the system board. 2 Place the heat sink assembly on the processor. 3 Replace the captive screws (6+/-1) to secure the heat sink assembly to the system board. NOTE: Tighten the screws based on the order given in the system board. 4 Connect the heat sink assembly cable to the connector on the system board. 5 Close the front panel door.
Installing the processor 1 Align the processor with the socket keys. CAUTION: Do not use force to seat the processor. When the processor is positioned correctly, it engages easily into the socket. 2 Align the pin-1 indicator of the processor with the triangle on the socket. 3 Place the processor on the socket such that the slots on the processor align with the socket keys. 4 Close the processor shield by sliding it under the retention screw.
System fan Removing the system fan 1 Follow the procedure in Before working inside your computer. 2 Remove the: a b Back cover Front bezel 3 Open the Front panel door. 4 To remove the system fan: a b c d Disconnect the system fan cable from the connector on the system board [1]. Remove the tape that holds the intrusion switch cable on the system fan and move the cable away. Stretch the grommets securing the fan to the computer to ease the removal of the fan [2].
Installing the system fan 1 Insert the grommets into the slots on the chassis frame. 2 Hold the system fan with the cable facing the base of the computer. 3 Align the grooves of the system fan with the grommets on the chassis wall. 4 Pass the grommets through the corresponding grooves on the system fan. 5 Stretch the grommets and slide the system fan toward the computer until it locks into place. 6 Secure the intrusion switch cable to the system fan with an adhesive tape.
Installing the VGA daughter board 1 Align the VGA daughter board with the screw holder on the system board. 2 Tighten the screw to secure the VGA daughter board to the system board. 3 Insert the VGA connector into the slot at the back of the computer. 4 Tighten the screws to secure the VGA connector to the computer. 5 Close the Front Panel Door. 6 Install the: a 7 Bezel b Back Cover Follow the procedure in After working inside your computer.
System board Removing the system board 1 Follow the procedure in Before working inside your computer. 2 Remove the: a b Back cover Front bezel 3 Open the front panel door. 4 Remove the: a b c d e f Heat sink assembly Processor Expansion card Optional M.2 PCIe SSD card SD card reader Memory module 5 Disconnect the optical drive and hard drive cables [1,2] from the connectors on the system board.
b c d e f g 7 power switch [2] speaker [3] PSU [4] power distribution for optical drive and hard drive [5] system fan [6] intrusion switch [7] To remove the system board: a Remove the screws (6+/-1) that secure the system board to the computer Disassembly and reassembly 43
b 44 Slide and lift the system board away from the computer [2].
Installing the system board 1 Hold the system board by its edges and align it toward the back of the computer. 2 Lower the system board into the chassis until the connectors at the back of the system board align with the slots on the chassis, and the screw holes on the system board align with the standoffs on the computer (1). 3 Replace the screws (6+/-1) to secure the system board to the computer. 4 Route all the cables through the routing clips.
7 Connect the system fan cable to the connector on the system board. 8 Close the front panel door. 9 Install the: a b c d e f 10 Close the front panel door. a 11 Memory module Optional M.2 PCIe SSD Expansion card SD card reader Processor Heat sink assembly Back cover Follow the procedure in After working inside your computer. System board layout This chapter explains about the motherboard's layout with name and location of its connectors.
11 Battery Connector (BATTERY) 12 Memory Connector (DIMM1~DIMM4) 13 Card Reader Connector (Card Reader) 14 Power Switch Connector (PWR_SW) 15 M.2 Socket 3 Connector (M.
19 Internal Speaker Connector (INT_SPKR) 20 Internal USB Connector (WF_BT_USB) 21 SATA 1 Connector White Color (SATA1) 22 Battery Connector (BATTERY) 48 Disassembly and reassembly
4 Technology and components This chapter details the technology and components available in the system.
Dell Command | Update Catalog - Provides searchable metadata that is leveraged with Dell Command | Update and enables management consoles Dell KACE Appliances, LANDesk Management Systems and Microsoft System Center to retrieve the latest system specific updates (driver, firmware, or BIOS) for any Dell commercial client to be delivered seamlessly to end-users.
• Performance: Simultaneous multithreading (SMT) to allow execution of two threads per core, increasing the Instruction Per Cycle(IPC) thus enhancing the processing throughput. • Power: AMD's Sense MI technology employs sensors across the chip to dynamically scaling the frequency and voltage automatically defined in processor itself allowing better use of available resources.
Table 2. Key Specifications Specification AMD Radeon R7 M450 Product Line AMD API Supported DirectX 12 , OpenCL 1.2 , OpenGL 4.3 Clock Speed 925 MHz Bus Width 128-bit Memory Clock Speed 1.125 GHz Technology DDR3 SDRAM Max External Resolution 1920 x 1080 Interface Type PCI Express 3.0 x16 AMD Radeon R5 M430 The AMD Radeon R5 M430 is an entry level graphics card for laptops. It is based on the older Radeon R5 M330 / M335 or R7 M340.
Table 4. USB evolution Type Data Transfer Rate Category Introduction Year USB 3.0/USB 3.1 Gen 2 5 Gbps Super Speed 2010 USB 2.0 480 Mbps High Speed 2000 USB 3.1 Gen 1 (SuperSpeed USB) For years, the USB 2.0 has been firmly entrenched as the de facto interface standard in the PC world with about 6 billion devices sold, and yet the need for more speed grows by ever faster computing hardware and ever greater bandwidth demands. The USB 3.
With today's ever increasing demands placed on data transfers with high-definition video content, terabyte storage devices, high megapixel count digital cameras etc., USB 2.0 may not be fast enough. Furthermore, no USB 2.0 connection could ever come close to the 480Mbps theoretical maximum throughput, making data transfer at around 320Mbps (40MB/s) — the actual real-world maximum. Similarly, USB 3.1 Gen 1 connections will never achieve 4.8Gbps.
Microsoft announced that Windows 7 would have USB 3.1 Gen 1 support, perhaps not on its immediate release, but in a subsequent Service Pack or update. It is not out of the question to think that following a successful release of USB 3.1 Gen 1 support in Windows 7, SuperSpeed support would trickle down to Vista. Microsoft has confirmed this by stating that most of their partners share the opinion that Vista should also support USB 3.1 Gen 1. Super-Speed support for Windows XP is unknown at this point.
Figure 3. Curved edge Memory Errors Memory errors on the system display the new ON-FLASH-FLASH or ON-FLASH-ON failure code. If all memory fails, the LCD does not turn on. Troubleshoot for possible memory failure by trying known good memory modules in the memory connectors on the bottom of the system or under the keyboard, as in some portable systems. Active State Power Management This section describes about the Active State Power Management (ASPM).
5 System setup System setup enables you to manage your desktop hardware and specify BIOS level options.
Table 5. General Option Description System Information Displays the following information: • • • • • Boot Sequence • • • • Advanced Boot Options Enabled(selected by default) Disabled Allows you to select BIOS Setup Advanced Mode. By default, this option is selected. • • Date/Time Boot Mode Boot List option: – Legacy – UEFI (Default) Enable Boot Devices Boot Sequence – Add Boot Option – Remove Boot Option – View Boot Option Allows you to select the Enable Legacy Option ROMs option.
Option Description • SATA Operation Allows you to configure the operating mode of the integrated hard drive controller. • • • Drives COM4 (Disabled by default) Disabled = The SATA controllers are hidden AHCI (Enabled by default) RAID ON = SATA is configured to support RAID mode (Disabled by default) Allows you to enable or disable the various drives on-board: • • • • • SATA-0 (enabled by default) SATA-1 SATA-2 SATA-3 M.
Table 8. Security Option Description Admin Password Allows you to set, change, and delete the admin password. System Password Allows you to set, change, and delete the system password. Internal HDD-0 Password Allows you to set, change, and delete the computer’s internal HDD. Internal HDD-1 Password Allows you to set, change, and delete the computer’s internal HDD. Internal HDD-2 Password Allows you to set, change, and delete the computer’s internal HDD.
Option Description • • Expert key Management Disable (selected by default) Enable Allows you to manipulate the security key databases only if the system is in Custom Mode. The Enable Custom Mode option is disabled by default. The options are: • • • • PK (default) KEK db dbx If you enable the Custom Mode, the relevant options for PK, KEK, db, and dbx appear.
Option Description Fan Control Override Allows you to determine the speed of the system fan. When this option is enabled, the system fan runs at the maximum speed. This option is disabled by default. USB Wake Support Allows you to enable the USB devices to wake the computer from standby mode. The option "Enable USB Wake Support" is selected by default Wake on LAN/WWAN This option allows the computer to power up from the off state when triggered by a special LAN signal.
Option Description SERR Messages Controls the SERR message mechanism. This option is set by default. Some graphics cards require that the SERR message mechanism be disabled. Dell Development Configuration This options is disabled by default. BIOS Downgrade Allows you to control flashing of the system firmware to the previous versions. This option is enabled by default. NOTE: If this option is not selected, the flashing of the system firmware to the previous versions is blocked.
Follow the instructions on the screen. Updating BIOS on systems with BitLocker enabled CAUTION: If BitLocker is not suspended before updating the BIOS, the next time you reboot the system it will not recognize the BitLocker key. You will then be prompted to enter the recovery key to progress and the system will ask for this on each reboot. If the recovery key is not known this can result in data loss or an unnecessary operating system re-install.
Flashing the BIOS from the F12 One-Time boot menu Updating your system BIOS using a BIOS update .exe file copied to a FAT32 USB key and booting from the F12 one time boot menu. BIOS Update You can run the BIOS update file from Windows using a bootable USB key or you can also update the BIOS from the F12 One-Time boot menu on the system.
4 The E5450A14.exe file is shown as an example in the following screenshot. The actual file name may vary. 5 Once the file is selected, it will show in the file selection box and you can click the OK button to continue.
6 Click the Begin Flash Update button. 7 A warning box is displayed asking you if you want to proceed. Click the Yes button to begin the flash.
8 At this point the BIOS flash will execute, the system will reboot and then the BIOS flash will start and a progress bar will show the progress of the flash. Depending on the changes included in the update, the progress bar may go from zero to 100 multiple times and the flash process could take as long as 10 minutes. Generally this process takes two to three minutes. 9 Once complete, the system will reboot and the BIOS update process is completed.
Table 17. Chipset Specifications Feature Specification Chipset AMD B350 Chipset Processor Table 18. Processor Specifications Feature Specification Processor type • • • • • • • Total L2 cache Up to 4MB AMD Ryzen 7 PRO 1700 (OC/L2 Cache: 4 MB/16T/3.0 GHz/65 W) AMD Ryzen 5 PRO 1500 (QC/L2 Cache: 2 MB/8T/3.5 GHz/65 W) AMD Ryzen 3 PRO 1300 (QC/L2 Cache: 2 MB/4T/3.5 GHz/65 W) AMD R7 PRO A12-9800 (QC/L2 Cache: 2 MB/3.8 GHz/65 W); AMD R7 PRO A10-9700 (QC/ L2 Cache: 2 MB/3.
Feature Specification • 4 GB AMD Radeon R7 450 Audio Table 21. Audio Specifications Feature Specification Integrated Realtek HDA Codec ALC3234 Network Table 22. Network Specifications Feature Specification Integrated BCM5762B0KMLG Broadcom ethernet controller Expansion bus Table 23. Expansion Bus Specifications Feature Specification Bus type USB 2.0, USB 3.1 Gen 1, SATA 3, and PCle up to Gen 3 Bus speed • • • • USB 2.0 – 480 Mbps USB 3.1 Gen 1 – 5 Gbps SATA 3.
Drives Table 25. Drives Feature Specification Internally accessible • • • 2.5-inch SATA drive bay 3.5-inch SATA drive bay M.2 SATA and NVMe SSD External connectors Table 26. External Connectors Specifications Feature Specification Audio Front panel Rear panel • • Universal headset Line out connector Network adapter RJ-45 connector Serial PS2 and serial connector USB 2.0 • • • Front - 2 Back - 2 Internal -2 USB 3.
Controls and lights Table 27. Controls and lights Feature Specification Front of the computer Power button light White light — Solid white light indicates power-on state; slow blinking white light indicates sleep state of the computer. Drive activity light White light — Slow blinking white light indicates that the computer is reading data from or writing data to the hard drive.
Physical dimension Table 29. Physical dimensions Physical Tower Height 35 cm (13.8 inches) Width 15.4 cm(6.1 inches) Depth 27.4 cm (10.8 inches) Weight 7.93 kg (17.49 lbs) Environmental Table 30.
8 Troubleshooting Diagnostic and Power LED codes Table 31. Power LED states Power LED light status Possible cause Troubleshooting steps Off The computer is either turned • off or is not receiving power or in Hibernation mode. • • Steady/blinking amber Computer fails to complete POST or processor failure. • • • Slow Blinking white light Computer is in sleep mode. • • • Steady white The computer is fully functional and in the On state. • Troubleshooting Remove and reinstall any cards.
NOTE: Amber LED blinking pattern : The pattern is 2 or 3 blinks followed by a short pause then X number of blinks up to 7. The repeated pattern has a long pause inserted in the middle. Example 2,3 = 2 amber blinks, short pause, 3 amber blinks followed by long pause then repeats. Table 32.
State State Name Blinking Amber Pattern Problem Description Suggested Resolution If customer can assist to troubleshoot, narrow down the issue with reseating memory and swapping a known good memory if available. If nothing works, replace the memory. S4 PCI 3 blinks > short pause > 1 blinks > long pause > repeats PCIe Device or Video subsystem failures PCIe device configuration activity is in progress or PCIe device failure was detected.
State State Name Blinking Amber Pattern Problem Description Suggested Resolution If none of the memory failed, replace the motherboard. S7 USB 3 blinks > short pause > 4 blinks > long pause > repeats Storage Subsystem failure Possible storage device configuration in progress or storage subsystem failure. If customer can assist to troubleshoot, narrow down the issue by removing one by one storages on motherboard to determine which one failed. If identified the storage failed, replace the storage.
State State Name Blinking Amber Pattern Problem Description Suggested Resolution If identified any of the component failed, replace the component. If none of the component failed, replace the motherboard. S10 MEM 3 blinks > short pause > 7 blinks > long pause > repeats Possible memory failure Memory subsystem configuration activity is in progress. Memory modules have been detected but appear to be incompatible or in an invalid configuration.
7 Getting help Contacting Dell NOTE: If you do not have an active Internet connection, you can find contact information on your purchase invoice, packing slip, bill, or Dell product catalog. Dell provides several online and telephone-based support and service options. Availability varies by country and product, and some services may not be available in your area. To contact Dell for sales, technical support, or customer service issues: 1 Go to Dell.com/support. 2 Select your support category.
8 Troubleshooting 80 Troubleshooting
