Hello,
Check which process is hogging the CPU in Task Manager - Processes tab.
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<(E-Mail Removed)> wrote in message
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> Ive got this issue where after installing just XP PRO, usage was
> normal. After upgrading to SP2, usage is always shown as 100% but the
> CPU runs fine. No lag or anything like that. Drives seem to be fine,
> no problems there. Got any ideas/suggestions, let me know!
>