user manual
Table Of Contents
- Product Features
- Installing and Customizing the Software
- Computer Setup (F10) Utility
- Serial ATA (SATA) Drive Guidelines and Features
- Identifying the Chassis, Routine Care, and Disassembly Preparation
- Removal and Replacement Procedures All-in One (AIO) Chassis
- Preparing to Disassemble the Computer
- Synchronizing the Optional Wireless Keyboard or Mouse
- Center Access Panel
- Stand
- Memory Access Panel
- Drive Access Panel
- Optical Drive
- Hard Drive
- Memory
- Top Panel
- Webcam Module
- Rear Cover
- System Board Cover
- Sidekey Board
- Converter Board
- Speakers
- WLAN Module
- Heat Sink (Thermal Module)
- Processor
- Fan Assembly
- Display Cable
- System Board
- Stand Bracket
- Hard Drive and Optical Drive Cables and Connectors
- Front Bezel
- Display Panel
- Password Security and Resetting CMOS
- POST Error Messages
- Troubleshooting Without Diagnostics
- Safety and Comfort
- Solving General Problems
- Solving Power Problems
- Solving Diskette Problems
- Solving Hard Drive Problems
- Solving Media Card Reader Problems
- Solving Display Problems
- Solving Audio Problems
- Solving Printer Problems
- Solving Keyboard and Mouse Problems
- Solving Hardware Installation Problems
- Solving Network Problems
- Solving Memory Problems
- Solving Processor Problems
- Solving CD-ROM and DVD Problems
- Solving USB Flash Drive Problems
- Solving Internet Access Problems
- Solving Software Problems
- Contacting Customer Support
- Connector Pin Assignments
- Power Cord Set Requirements
- Specifications
- Index
Computer powered off automatically and the Power LED flashes Red two times, once every second, followed by a
two second pause, and the computer beeps two times. (Beeps stop after fifth iteration but LEDs continue flashing).
Cause Solution
Processor thermal protection activated:
A fan may be blocked or not turning.
OR
The heat sink is not properly attached to the processor.
1. Ensure that the computer air vents are not blocked and
the processor cooling fan is running.
2. Open hood, press power button, and see if the
processor fan spins. If the processor fan is not spinning,
make sure the fan's cable is plugged onto the system
board header.
3. If fan is plugged in, but is not spinning, then replace the
heat sink/fan assembly.
System does not power on and the LEDs on the front of the computer are not flashing.
Cause Solution
System unable to power on. Press and hold the power button for less than 4 seconds. If
the hard drive LED turns green, then:
1. Check that the voltage selector, located on the rear of
the power supply on some models, is set to the
appropriate voltage. Proper voltage setting depends on
your region.
2. Replace the system board.
OR
Press and hold the power button for less than 4 seconds. If
the hard drive LED does not turn on green then:
1. Check that the unit is plugged into a working AC outlet.
2. Open computer and check that the power button board
cable is properly connected to the system board.
3. Check that power supply cables are properly connected
to the system board.
4. Check to see if the 5V_aux light on the system board is
turned on. If it is turned on, then replace the power
button board.
5. If the 5V_aux light on the system board is off, then
replace the power supply.
6. Replace the system board.
100 Appendix C Troubleshooting Without Diagnostics