Boots, shows desktop, BSOD after a few seconds

Windows Vista Home Premium 32-bit

Windows boots normally and everything seems fine for a few seconds (5-20 usually), then gives a blue screen STOP error.

I can still start up in Safe Mode. Neither sfc.exe /scannow and chkdsk /f have found any problems. I can't use Debugging Tools because the Windows Installer isn't initialized in Safe Mode. There aren't any System Restore points. Currently running Memtest but no errors have come up so far. There haven't been any recent hardware, software or driver changes as far as I know.

Help would be greatly appreciated.

 

Attached are a few small dumps. WinDbg traces the error to rassstp.sys, which is related to WAN Miniport (SSTP). I have no clue how to proceed.

 

Yeah, that's what I did to trace the problem to rassstp.sys.

I think it's fixed now.
Uninstalled my graphics card drivers, updated the SSTP driver (it was unsigned?) and disabled the SSTP service. Not sure which one of those did it (probably updating the driver), but it doesn't crash anymore. Thanks for the help