HP ENVY 17-j184na Black Screen After BIOS update

[thudson]

Tonight I decided to do a little maintenance on my HP ENVY 17-j184na, and the first thing I started with was the F.68 Rev.A BIOS. I used the Use HP Download and Install Assistant to manage the whole thing.

Everything seemed to go well, and I was presented with a BIOS like screen which confimed the BIOS flash was successful. The laptop then appeared to restart and a black screen was shown. I left the laptop for 30 minutes and it got no further.

So, now when I power on the laptop the fan whirls, and the caps lock light flashes (2 flashes then 53 second pause), and thats it. I have tried the following:

• Take the battery out, unplug from ac, hold down power button, wait 5 minutes, turn on
• Hold down "windows key + B" whilst pressing the power button for 8 seconds - letting go of the power button after 3 seconds
• Repeatedly tapping "esc" key after pressing the power button
• Plugging in an external monitor and doing all of the above

Nothing has worked. My perfectly fine laptop is now a very expensive paperweight as it is out of warranty. Feels pretty terrible to have done a simple BIOS update and have this happen.

Can someone please help me? I am out of ideas...

[thudson · Accepted solution]

Fixed it myself...

...took the back panell off, unplugged the CMOS battery for 5 minutes. Plugged it back in and switched it on. The screen flashed a bit and then came on. Result!