Diagnostic light codes Problem description
2,8 LCD power rail failure.
3,1 CMOS battery failure
3,2 PCI, video card/chip 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
3,7 Management Engine (ME) error
Identifier GUID-86DBC459-27F7-4CDA-94FD-C060FE8C10A3
Version 1
Status Released
Flea power release
About this task
Flea power is the residual static electricity that remains on the computer even after it has been powered off and the battery has been
disconnected from the system board. The following procedure provides the instructions on how to release the flea power:
Steps
1. Turn off your computer.
2. Remove the base cover.
NOTE:
The battery must be disconnected from the system board (see Step 4 in Removing the base cover).
3. Press and hold the power button for 15 seconds to drain the flea power.
4. Install the base cover.
5. Turn on your computer.
Identifier
GUID-7D2143EA-2C62-498E-97AF-DCEF3DA56624
Version 5
Status Released
WiFi power cycle
About this task
If your computer is unable to access the Internet due to WiFi connectivity issues, a WiFi power cycle procedure may be performed. The
following procedure provides the instructions on how to conduct a WiFi power cycle:
NOTE:
Some ISPs (Internet Service Providers) provide a modem/router combo device.
Steps
1. Turn off your computer.
2. Turn off the modem.
3. Turn off the wireless router.
4. Wait for 30 seconds.
5. Turn on the wireless router.
6. Turn on the modem.
7. Turn on your computer.
60
Troubleshooting
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