Recovering The Operating System - Dell Precision 7960 Service Manual

Table 17. System-diagnostic lights (continued)
LED6 LED5
Blue Blue
Blue Blue
Blue Blue
Blue Blue
Blue Blue
White Blue

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 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/serviceabilitytools. Click SupportAssist and then, click SupportAssist OS Recovery.
Blinking pattern
LED4 LED3
White Blue
Blue White
Blue White
Blue Blue
Blue Blue
White White
LED2 LED1
Blue Blue
Blue Blue
Blue Blue
White White
White White
White White
Problem
description
LED0
Blue CPU1
Memory
power fail
White CPU2
Memory
power fail
Blue CPU2
Memory
power fail
White CPU2
Memory
power fail
Blue CPU2
Memory
power fail
White GPU power
cable fail
Troubleshooting
Suggested
resolution
1. Replace
the
system
board
2. Change
Memory
1. Replace
the
system
board
2. Change
Memory
1. Replace
the
system
board
2. Change
Memory
1. Replace
the
system
board
2. Change
Memory
1. Replace
the
system
board
2. Change
Memory
1. Replace
the
system
board
2. Change
GPU
power
cable
103