BSOD after installing all Windows Updates

I have managed to achieve the BSOD quite a lot, and have tried re-installing Windows 7 x64 on my computer three times today.

I have received the BSOD:

after trying to reformat my F: drive.
Uninstalling my Nividia drivers for a new one
After using Firefox for a while it just won't open and BSOD follows shortly after
I believe after installing Windows Live applications it startes to give me BSOD

After the first BSOD I start to get the error message:
Check filesums or somehting about the computed sums is not correct.

Any help would be greatly appreciated!

System Manufacturer/Model Number Alienware
OS Windows 7 x64 - RC Build 7100
CPU Intel(R) Pentium(R) D CPU 3.00GHz (2 CPUs), ~3.0GHz
Motherboard ASUS P5ND2-SLI NFORCE4 MB
Memory 8 GB DDR3
Graphics Card BFG GeForce 280 GTX
Sound Card ASUS AUDP5ND REALTEK ON-BOARD AUDIO
Monitor(s) Displays Samsung PnP

PSU M1000 CoolerMaster
Case Alienware 1st Gen
Cooling Silent Fans
Hard Drives WD RAPTOR 74GB SATA 10K RPM 8MB HD CRUCIAL 512MB DDR2 PC5300

DB

Hi and welcome to sevenforums

can you get into win 7? If so could you go to your windows\minidump dir and find the dump files for the bsod. they have a *.dmp extension. zip them and upload so we can take a look at them.

In case you need help. When replying click on the icon shaped like a paperclip (to attach) browse to the dump file, click upload and close when done.

Thanks

Ken