Solved BSOD ntoskrnl.exe, dxgmms1.sys and others

[gregrocker]

I already reinstalled the OS : ( (not as you suggested, but with partition formatting), I own a Win7 Professional 64bit, but I use it on my laptop, so..

....so what? Why are you installing Ultimate if you don't own it? And how was Enterprise activated when it was the installed version - it's meant for use by large organizations?

If you want further help install and run MGADiag.exe , post back it's output.