Owners Manual

Table 19. Diagnostic LED behavior (continued)
Blinking pattern
Problem description Suggested resolution
Amber White
2 5 Invalid memory installed Reset the memory module. If problem
continues, replace the memory module.
2 6 System-board or chipset error Flash the latest BIOS version. If problem
continues, replace the system board.
2 7 Display failure Flash the latest BIOS version. If problem
continues, replace the LCD module.
2 8 LCD power rail failure Replace the system board.
3 1 CMOS battery failure Reset the CMOS battery connection. If
problem continues, replace the RTS
battery.
3 2 PCI, video card/chip failure Replace the system board.
3 3 Recovery image not found Flash the latest BIOS version. If problem
continues, replace the system board.
3 4 Recovery image found but invalid Flash the latest BIOS version. If problem
continues, replace the system board.
3 5 Power-rail failure EC ran into power sequencing failure. If
problem continues, replace the system
board.
3 6 System BIOS Flash incomplete Flash corruption detected by BIOS. If
problem continues, replace the system
board.
3 7 Management Engine (ME) error Timeout error displayed while waiting on
ME to reply to HECI message. If problem
continues, replace the system board.
4 1 Memory DIMM power rail failure Replace the system board.
4 2 CPU power cable connection issue Initiate PSU BIST. If problem persists,
replace the system board.
Recovering the operating system
When your computer is unable to boot to the operating system even after repeated attempts, it automatically starts Dell
SupportAssist OS Recovery.
Dell SupportAssist OS Recovery is a standalone tool that is preinstalled in all Dell computers installed with Windows 10 operating
system. It consists of tools to diagnose and troubleshoot issues that may occur before your computer boots to the operating
system. It enables you to diagnose hardware issues, repair your computer, back up your files, or restore your computer to its
factory state.
You can also download it from the Dell Support website to troubleshoot and fix your computer when it fails to boot into their
primary operating system due to software or hardware failures.
For more information about the Dell SupportAssist OS Recovery, see Dell SupportAssist OS Recovery User's Guide at
www.dell.com/support.
Flashing BIOS (USB key)
Steps
1. Follow the procedure from step 1 to step 7 in "Flashing the BIOS" to download the latest BIOS setup program file.
Troubleshooting
101