What is happening to my computer

tn2006

New member
My desktop was fine before. For the last few days it was running so slowly and getting slower slower by day. And today, it frozen everytime when I tried to open ANY applications (window explore, cotrol pannel......). Looked at Task Manager-----Performance, and saw CPUsage at 100% eventhough no software/application running. What can be happenned.

It's P4, XP2.

PS. Last few days, I downloaded the software dvdfab. I think when I dl the software it contains the virus. The problems come after I dl it (I think). Could it be? Tried to delete but can't because computer frozen right after I open any applications
 
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