[BSoD] STOP: 0xF4 (0x3, ...)

I am running Windows Vista Business x64 SP2. After rebooting, I got a BSoD. It went a little something like this:
STOP: 0x000000F4 (0x0000000000000003, 0xFFFFFA800AAF1C10, 0xFFFFFA800AAF1E48, 0xFFFFF80001EE68D0)

I am posting this from my Gentoo install on the same machine.

Here is what I did before the deadly reboot:

• I used Microsoft AppLocale to load Vanguard Princess
• I installed Hold 'Em and Tinker (2 games released as Ultimate Extras). I found 'patched' versions of these.
• I am working on an NSIS installer that copied files to C:\Windows\Help\Windows, and might have accidentally ran the command "RMDir $WINDIR\Help\Windows" (from the uninstaller). From Gentoo, I can browse to this folder, inside is a folder called en-US, in that folder, there are files (so, I don't think I actually deleted anything).

I don't have any System Restore points, for some reason I disabled that.
I tried using the Vista Recovery Disc. It tried to auto-repair, and failed. It said "System Files Integrity Check and Repair. Failed. Error Code 0x2.

What do I do?

Tried that, did nothing. Oh, and speaking of Safe Mode, I can't access that either.