Laptop not booting after I Upgraded BIOS

Question

Toshiba Satellite A215-S5849
Originally had issues with the left speaker making a horrible buzzing noise. Searching forums & help boards & the fact that I'm fairly computer Literate I came to the conclusion a OS reinstall was called for.
Since I only use this laptop for DJing theres only a couple of programs on it so it was not too much hastle.
Reinstalled OS Windows 7 updated it & all the drivers & the Buzz was still there.
This is when I read from a couple of users of Toshiba laptops said an upgrade of the BIOS helped them.
So I went to the official Toshiba support page & flashed my laptop using the following BIOS upgrade
ACPI Flash BIOS version 2.00 for Satellite A215 (PSAFGU/PSAFHU) 32/64-bit
Nearing the end of the flash my pc screen went black power lights are on, cord light on, battery light on just no OS
What I've tried.
Unplugged from power supply.
Removed Battery
Left for 20 mins & then tried to reboot.
Same thing happens each time
Power lights come on HD spins for a minute but nothing happens after that.
Any ideas why an official software update would cause my computer to not work & how do I roll back or clear my bios to default specs.

Answer 1

Finally I found a good Phoenix crisis copy at : http://mods.myftp.org/Tools/CrisDisk_and_Pen_Drive?_Recovery.rar
to download my own version of crisis disk with the new v2.0 rom bios. ready to build the floppy by running the crisdisk.bat:
http://rapidshare.com/files/410963513/CrisDisk.zip?.html
I posted this instruction to repair my A215 with these files:
Since finding a solution was a very confusing experience, here is how I fixed it (it should work for most similar models.)
Now read it all the way through because the steps are critical.
I got a Toshiba Satellite A215 PSAFGU (S6814) And after shutting down from overheating during a flash from windows it didn't boot. Black screen and nothing more. Meanning my bios was corrupt
So after lots of trial and error, using an external usb floppy drive I managed to save my laptop.
Maybe people here describe how to do it, but they tell you to download the wrong crisis recovery files and once you try to use your ROM instead of the one on the disk, or try to replace phlash16.exe it just fails. Tried injecting but that didn't work.
Finally I found a good Phoenix crisis copy at : http://mods.myftp.org/Tools/CrisDisk_and_Pen_Drive?_Recovery.rar
unrar and go to the directory, then unrar (you'll see it) CRISDISK.rar .
This copy of crisis with phflash16.exe (in the extracted directory) is a good version that can handle the newest versions of bios ROM.
Now copy your ROM file to the crisisdisk directory renaming the file to bios.wph and thus replacing the existing one.(i used the new 2.0 version ROM from the Toshiba site - in this case its called m10a200.rom)
To prevent 'dos path' errors when building the disk, copy the entire directory to a simple one like c:\cirsis
Build your disk now by running CRISDISK.BAT - the process includes quick formatting, copying the three files, and lastly making it bootable, make sure you go through all the steps. ( at first, i messed the last part by not having it bootable and it failed ofcourse)
once it says it created the disk successfully, put it in your external usb drive (or use the disk you created to make a bootable flash drive by using hp drivekey boot utility available here: http://h20000.www2.hp.com/bizsupport/TechSupport/S?oftwareDescription.jsp?swItem=MTX-UNITY-I23839 I didn't have a chance to test it with usb flash drives, but it should work.)
Now once you connected your media to the usb port on your laptop:
make sure the battery is out, power cord out, hold fn+f, while doing that, plug the cord and then push the power button, release the fn+f key once you see the light on your usb drive/usb floppy is starting to blink. it should pause for a few seconds, and then start reading the disk for a while (not just 3 seconds). Process should not take more then 10 minutes so waiting more then that is a waste(trust me). The computer should reboot byitself if everything is fine. Mine took about 5 minutes but give it 10 just to make sure.
After hours of finding, replacing, injecting, only this worked.
This works for sure, if you follow these instructions with your Toshiba Satellite A215. Don't loose hope - you will recover it.
A good sign is when using the fn+f method and it flashed the usb drive/floppy. It means its 99% recoverable.
Really hope this saves time for others.
This is a solution posted by yarivc on the USA Toshiba site.
http://laptopforums.toshiba.com/t5/System-Recovery-and-Recovery/Toshiba-Satellite-A215-S7422-bios-crisis-recovery/td-p/69185
BTW
to the last poster
If you were to ask 100 customers in any comp store who just purchased a Toshiba Laptop if they knew a OFFICIAL UPDATE from the manufacturers support website would VOID a warrenty I gaurantee not one of them would know that nor be impressed by it.
Further more what screwed up my bios was not the BIOS upgrade but the fact that Toshiba has a install from your desktop (windows) button in the update, researching this I found that one should never use this method because Windows in inherently unstable when it comes to BIOS update.
This option should NOT have been included in the update since its very unstable to do so.
On a side note.
My left speaker buzzing noise is back. But it doesnt seem too annoying right now concidering I saved myself money & headache.