Troubleshooting
System diagnostic lights
Power status light:
Indicates the power status.
Solid Amber
– The computer is unable to boot to the operating system. This indicates that the power supply or another device in the
computer is failing.
Blinking Amber
– The computer is unable to boot to the operating system. This indicates that the power supply is normal but another
device in the computer is failing or not installed properly.
NOTE:
See the light patterns to determine the device that is failing.
Off
– Computer is in hibernation or turned off.
The power status light blinks amber along with beep codes indicating failures.
For example, the power status light blinks amber two times followed by a pause, and then blinks white three times followed by a pause. This
2,3 pattern continues until the computer is turned off indicating the Recovery image is not found.
The following table shows different light patterns and what they indicate:
Table 22. System diagnostic lights
Light pattern
Problem description
2,1
System board error
2,2
System board or power supply unit or power supply cable error
2,3
•
System board or memory or CPU error
•
Amber, if processor is not installed
2,4
Coin-cell battery error
2,5
BIOS failure
2,6
CPU failure
2,7
Memory or RAM failure
3,3
Memory error
3,5
Memory error
3,6
BIOS Recovery Image Not Found
3,7
BIOS Recovery Image Found But Invalid
The computer may emit a series of beeps during start-up if the errors or problems cannot be displayed. The repetitive beep codes help the
user troubleshoot problems with the computer.
Camera status light:
Indicates whether the camera is in use.
•
Solid white – Camera is in use.
6
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Troubleshooting
Summary of Contents for Inspiron 5720
Page 1: ...Precision 5720 All in One Owner s Manual Regulatory Model W13C Regulatory Type W13C001 ...
Page 69: ...2 Place the middle frame on the assembly Removing and installing components 69 ...
Page 86: ...86 Technology and components ...
Page 97: ...Software 97 ...
Page 100: ...100 Software ...
Page 106: ...106 Troubleshooting ...