CPU Usage very High

I have solved this problem, it is registry misbehaviour in windows xp. Raybay is also true in saying about the process of elimination or hardware checking to solve the problem. there r a few spyware and worms that creates the same problem. but if spyware or worm is not present in your hard disk than it is the registry problem that comes with xp,which is true in most of the cases. To solve this problem, u have to do the following:
In windows xp,click start>run and enter regedit and remove the following registry key.

"HKEY_LOCAL_MACHINESOFTWAREClassesCLSID{87D62D94-71B3-4b9a-9489-5FE6850DC73E}InProcServer32"

or

click Start>Run and enter regedit and navigate to the following key:

HKEY_CLASSES_ROOTSystemFileAssociations.avishellexPropertyHandler

by clicking the + signs beside

Hkey_Classes_Root/SystemFileAssociations/.avi/shellex

then select (highlight) PropertyHandler

>> next Click File > Export and give the file a name. Then export (save) it to a convenient location before deleting it. It can be restored later if necessary by clicking the saved .reg file

>> after saving it, Right click on the PropertyHandler folder in the left hand pane and select "Delete"

and your problm is solved..

I am in touch again...Raybay.. just to refresh memory..i am the same guy from the system instability problem that we discussed long time back...