Dell Alienware m15 R7 AMD Service Manual - Page 87

System-diagnostic lights, Recovering the operating system

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System-diagnostic lights Power and battery-status light The power and battery status light indicates the power and battery status of the computer. These are the power states: Solid white:Power adapter is connected and the battery has more than 5% charge. Amber:Computer is running on battery and the battery has less than 5% charge. Off: ● Power adapter is connected, and the battery is fully charged. ● Computer is running on battery, and the battery has more than 5% charge. ● Computer is in sleep state, hibernation, or turned off. The power and battery-status light may also blink red or blue according to pre-defined "beep codes" indicating various failures. For example, the power and battery-status light blinks red two times followed by a pause, and then blinks blue three times followed by a pause. This 2,3 pattern continues until the computer is turned off, indicating no memory or RAM is detected. The following table shows different power and battery-status light patterns and associated problems. NOTE: The following diagnostic light codes and recommended solutions are intended for Dell service technicians to troubleshoot problems. You should only perform troubleshooting and repairs as authorized or directed by the Dell technical support team. Damage due to servicing that is not authorized by Dell is not covered by your warranty. Table 20. Diagnostic-light LED codes Diagnostic light codes Problem description 2,1 Processor failure 2,2 System board: BIOS or ROM (Read-Only Memory) failure 2,3 No memory or RAM (Random-Access Memory) detected 2,4 Memory or RAM (Random-Access Memory) failure 2,6 System-board or chipset error 2,7 Display failure - SBIOS message 3,1 RTC power failure 3,3 Recovery image not found 3,4 Recovery image found but invalid 3,5 Power-rail failure 3,6 System BIOS Flash incomplete 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. 87

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System-diagnostic lights
Power and battery-status light
The power and battery status light indicates the power and battery status of the computer. These are the power states:
Solid white:
Power adapter is connected and the battery has more than 5% charge.
Amber:
Computer is running on battery and the battery has less than 5% charge.
Off:
●
Power adapter is connected, and the battery is fully charged.
●
Computer is running on battery, and the battery has more than 5% charge.
●
Computer is in sleep state, hibernation, or turned off.
The power and battery-status light may also blink red or blue according to pre-defined "beep codes" indicating various failures.
For example, the power and battery-status light blinks red two times followed by a pause, and then blinks blue three times followed
by a pause. This 2,3 pattern continues until the computer is turned off, indicating no memory or RAM is detected.
The following table shows different power and battery-status light patterns and associated problems.
NOTE:
The following diagnostic light codes and recommended solutions are intended for Dell service technicians to
troubleshoot problems. You should only perform troubleshooting and repairs as authorized or directed by the Dell technical
support team. Damage due to servicing that is not authorized by Dell is not covered by your warranty.
Table 20. Diagnostic-light LED codes
Diagnostic light codes
Problem description
2,1
Processor failure
2,2
System board: BIOS or ROM (Read-Only
Memory) failure
2,3
No memory or RAM (Random-Access Memory)
detected
2,4
Memory or RAM (Random-Access Memory)
failure
2,6
System-board or chipset error
2,7
Display failure - SBIOS message
3,1
RTC power failure
3,3
Recovery image not found
3,4
Recovery image found but invalid
3,5
Power-rail failure
3,6
System BIOS Flash incomplete
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
.
87