Sudden CPU Spikes And OS Freeze In Windows 7?

Aug 28, 2011

The worst thing is, this is a new PC and I've just freshly installed Windows 7 Home Premium 64-bit on it.

I've already updated ALL my device drivers to the latest available, as well as applied all available Windows updates, yet it still happens. These weird CPU Spikes can occur seemingly randomly, and thereafter causes my OS to inevitably freeze or become EXTREMELY unresponsive at best. I am unable to Restart the computer (it either hangs at logging off or doesn't seem to be able to shutdown (left it trying to shutdown for 1 hour).

The onset has happened to me so far in these scenarios:

1) Just surfing the internet

2) Playing a video file

3) Leaving the computer idle (It was frozen when I got back to my PC)

4) Changing control panel settings

I was lucky enough to capture and save the screenshots showing it in Task Manager. The culprit process seems to be the 'SYSTEM' process (which shows only 25% CPU usage, however as you can see my ACTUAL CPU usage spikes all the way to 100%!

Quoted below is my system information:
Code: System Information report written at: 08/28/11 19:55:16
System Name: TIMO-PC
[System Summary]

[Code].....

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Diagnostic Report (1.9.0027.0):
-----------------------------------------
Windows Validation Data-->
Validation Code: 50
Cached Online Validation Code: 0x0
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Windows Product Key Hash: LBBNdBjOgDVnX3HmlFT1t0faJuc=

[code]....

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ALIENWARE AURORA R3
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