Windows 7: Windows 7 processes run 50% or more on P5P800-VM mobo

Hi all,

First, my system:
P5P800-VM mobo
Intel pentium 805D
I865g Intel Chipset
NVidia 6200
4GB Ram

Previously ran Win XP upgraded to Vista 64 bit both ran fine on the hardware.

Tried upgrading to Win 7 64 and 32 bit versions. Installed appropriate drivers for both platforms and neither run as well as XP did.

The symptom are consistent regardless of Win 7 32 bit or 64 bit and they are:

Under task manager, any running application, when active will consume 10 - 50 percent of cpu. (for example, firefox when I am not interacting with it will consume 10-15% of cpu. I click on a link and suddenly it jumps to 45 - 50% cpu. MS Word same thing, when started and at rest 10 -15% cpu, as soon as I try to take any action (open file etc) cpu usage for word jumps to 45 -50% of cpu))

video playback using firefox and IE is dropping video frames. Audio seems ok. If I play video file that is on my hard drive thru Windows media player same symptoms.

Audio breaks down in itunes during playback.



Has anyone else experienced the same problems and has hardware similar to mine? Anyone found solutions?