BSoD; pc won't boot up

[JXEYES]

Windows vista x64
alienware m17 (laptop)

while playing an older video game (wolfET) I got the blue screen of death (fatal error wins had to stop running due to hardware) and ever since when the pc turn on it gets stuck at the boot screen (alienware logo and option for boot menu f10, bios settings f2). It will not respond or continue to boot  up. Only two reactions: f2 makes a beep, and ctrl alt delete restarts (unless f2 has already been pressed; if so then it does nothing). What's wrong with my pc and how can I fix it?

[JJ 3000]

Tap F2 repeatedly as the computer is first starting up. Can you get into BIOS now? Is the hard drive recognized?

[Mulreay]

Only two reactions: f2 makes a beep,

How many beeps? and are they long or short? This is an internal way of telling you whats wrong.. there is a very helpful section here to help with them.

Added the link

http://www.computerhope.com/beep.htm

[JXEYES]

F2 made one short beep that was not repeatable. Also this had no other effect (could not get into BIOS; no way of telling if hard drive was recognized).

Anyway, I let it just sit over night. This morning I pressed F2, it beeped but immediately brought me to the bios. I honestly didn't know what I was looking at for the mot part, so I just exited (discarding changes). This time it booted all the way up into Windows desktop screen and I was greeted with this message:

Windows Recovered from an Unexpected Shut Down
Problem signature:
  Problem Event Name:   BlueScreen
  OS Version:   6.0.6001.2.1.0.256.1
  Locale ID:   1033

Additional information about the problem:
  BCCode:   7f
  BCP1:   0000000000000008
  BCP2:   0000000080050031
  BCP3:   00000000000006F8
  BCP4:   000000000040FA9D
  OS Version:   6_0_6001
  Service Pack:   1_0
  Product:   256_1

Files that help describe the problem:
  C:\Windows\Minidump\Mini050210-01.dmp
  C:\Users\*USER*\AppData\Local\Temp\WER-123256-0.sysdata.xml
  C:\Users\*USER*\AppData\Local\Temp\WERB115.tmp.version.txt

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[patio]

Return to the BIOS setup page and reset it to the default settings...
Press F6 to "save changes and exit" and answer Y if prompted...

[JXEYES]

Thanks for your help but, care to explain why?

[patio]

Exiting Setup without knowing what changes were made is never a good thing...

At any rate it's worth a try.

[JXEYES]

Well I agree, that's why I exited the BIOS without saving changes (not that I made any changes anyway). I would imagine that the settings are already set to default because i've never altered them but I don't want to alter any setting that might have been set from the factory.

So, can anyone tell me why this happened? Luckily the computer seems to be running fine but what does the error mean? The beep? I suspect it has something to do with the GPU RAM, but I don't really know that.

[JXEYES]

No answer?

[Spoiler]

Did you set the BIOS to the default setting as Patio asked you too?