NOTE: I have never personally had the chance (what a chance…) to try this recovery procedure, however I’ve found multiple references of people having successfully tested it, even on HP Pavilion laptops. If it doesn’t work for you please report it both here and to those who’ve had direct experience of it, I’m sorry I cannot assist you on this.

In case of a failed BIOS update (or a broken BIOS upgrade) you get a dumb laptop with a blank screen. A few people have successfully tried the following procedure to recover their laptop in this scenario:

Remove your hard disk and your battery.

You should force the system to boot from either the FLOPPY, CDROM or a FlashDrive.

Download and unzip B1800 crisis recovery disk and be sure you replace the provided bios (BIOS.WPH) file with your laptop most current bios file (Phoenix only). Note that you should first extract from the BIOS updater exe tool the BIOS ROM, then rename your ROM as BIOS.WPH.

Use crisdisk tool to create a bootable diskette and a bootable floppy with the files phlash.exe, minidos.sys and (your bios file) bios.wph will be created for you

Held Win+B key (other report the key combination being Fn+B)

plug in AC adaptor

Push the power button, with the two other buttons still down.
If the power led start, release the ‘Fn’and ‘B’ button.
If you’re lucky, you’ll hear lots of beeps…. Your computer will reset itself and start in Windows!! can take 5 to 10 minutes so be patient.

Powered on, it did some beeping then I saw the light access of my flash drive, when the light stop I released win+b, it did some beeping then the cpu fan quick in (I knew then I was in good shape because it’s the sound it make when the bios is flashing) then it stop and more beeping for 30 secs then it powered itself off .. done!

If the booting doesn’t succeed, try a different timing on releasing the ‘Fn’ and ‘B’ button.