Table 9. LED codes (continued)
Diagnostic light codes
Problem description
Recommended solutions
2,1
Processor failure
Run the Intel CPU diagnostics tools. If
problem persists, replace the system board.
2,3
No memory or RAM (Random-Access Memory)
detected
Confirm that the memory module is installed
properly. If problem persists, replace the
memory module.
2,4
Memory or RAM (Random-Access Memory)
failure
Reset and swap memory modules amongst
the slots. If problem persists, replace the
memory module.
2,7
LCD failure - SBIOS message
Replace display vable (EDP) if possible,
otherwise replace the display assembly
(LCD).
2,8
LCD failure - EC detection of power rail failure
Replace the system board.
3,1
Coin-cell battery failure
Reset the CMOS battery connection. If
problem persists, replace the RTC battery.
3,3
Recovery image not found
Flash latest BIOS version. If problem persists,
replace the system board.
3,4
Recovery image found but invalid
Flash latest BIOS version. If problem persists,
replace the system board.
3,5
Power-rail failure
EC ran into power sequencing failure. If
problem persists, replace the system board.
Camera status light:
Indicates whether the camera is in use.
●
Solid white—Camera is in use.
●
Off—Camera is not in use.
Caps Lock status light:
Indicates whether Caps Lock is enabled or disabled.
●
Solid white—Caps Lock enabled.
●
Off—Caps Lock disabled.
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.
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Troubleshooting