Laptop won't turn on but the power light stays on for a few seconds
Help my Dell laptop won't turn on I've done everything said from the internet
power button's led keeps on and the laptop is not booting
Laptop not starting up - Power light dimly lit
How to restart Dell laptop without power button?
How do you reset an unresponsive Dell laptop?
Where is the reset button on a Dell laptop?
Help my Dell laptop won't turn on I've done everything said from the internet. Any tips? I got important stuff I forgot to download 😭
After enabling the external USB ports in the UEFI setup menu, my laptop fails to boot. Pressing the power button results in the button light turning on for (pretty much exactly) 5 seconds, and when on battery power, one of the five battery LEDs briefly flashes orange. There is no display, fan or keyboard activity. The exact same behaviour occurs when starting the laptop in emergency BIOS recovery mode (inserting the AC adapter while pressing the End key), except that the power button light blinks (again, for five seconds).
I’ve tried clearing the NVRAM by removing all power sources and draining flea charge, and also removing the RAM, SSD and WiFi cards. The RTC battery was dead, but replacing it did not help.
Three questions:
-
I suspect that the cause is a fried power supply circuit. Does this seem plausible, given the above information?
-
Are there any other troubleshooting steps I should try? Here is the motherboard schematic, if that is of any use. I have access to an oscilloscope, but my electronics knowledge is elementary at best.
-
As a last-ditch effort, I’m thinking of trying to reflash the BIOS in emergency flash mode. However, I’m unable to extract the .hdr and .rom files from the A08 Windows executable (“Error: Unable to load driver). Would one of you be able to extract the files and PM them to me?