(FIXED) Seeking PC help from system building gurus

[Retro_71]

Normally SP3 fixes alot of issue its rare for it to make something stuff up.
Have you tested your ram? Try moving them to different slots.
Also check the rails on the power supply either by multimeter or looking at the bios to see how much power they are providing.
What bios setting have you got enabled? namely in the power management options make sure HPet is off.
Also see in PC health and make sure CPU smart fan is off.
Have you tried loading into safe mode and checking to see if you get 100% cpu usage?
Have you download the lastest directX drives? 9c june 2010.
as for virus and the like I use AVAST less overhead then Symantec endpoint, there is a free and a paid for version (i use the paid for version).
Use firefox instead of IE and get the ADBlock Plus for firefox.

[Retro_71]

Actually.... he did say updated bios so i assumed that defaults were loaded after restart.
but the main problem is SP2 working SP3 Not, that the weird part. Maybe something in registry or start-up is causing this hence why I asked for if booted in safe mode.
How large is your HDD? do you only have one partition?

[Retro_71]

Hence why I always say boot into safe mode and see if you have any problems and work your way from there. Also installing all MB drivers from the CD or Website never trust MS Drivers fully. I am glad you were able to find it and hope you fix it soon.