Wifi Power Cycle - Dell 0HRTG Service Manual

Table 4. LED codes
Diagnostic light codes
2,7
2,8
3,1
3,2
3,3
3,4
3,5
3,6
3,7
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.
82 Troubleshooting
Problem description
LCD failure - SBIOS message
LCD failure - EC detection of power rail failure
Coin-cell battery failure
PCI, video card/chip failure
Recovery image not found
Recovery image found but invalid
Power-rail failure
System BIOS Flash incomplete
Management Engine (ME) error
Recommended solutions
Replace display vable (EDP) if possible,
otherwise replace the display assembly
(LCD).
Replace the system board.
Reset the CMOS battery connection. If
problem persists, replace the RTC battery.
Replace the system board.
Flash latest BIOS version. If problem persists,
replace the system board.
Flash latest BIOS version. If problem persists,
replace the system board.
EC ran into power sequencing failure. If
problem persists, replace the system board.
Flash corruption detected by SBIOS. If
problem persists, replace the system board.
Timeout waiting on ME to reply to HECI
message. If problem persists, replace the
system board.