running SP3. xp pro.
then installed graphic and mother board drivers.
before connecting to the internet or any LAN or installing anyother application. i installed NOD 32 and Spy bot, did both scans. then connected to the internet and did updates for nod and spybot. and scanned again. CPU usage after this was 1%.
later during the day. my CPU suddenly was 50 % and idle was 99%
that to me is wrong. and if its just a bug. its one that is killing my pc.
this is a constant rate of 60% odd (running so far for 3 hours... no change)
I've had problems with Idle Process being tampered with by viruses in the past, and I was getting all kinds of weird goings on. I'm guessing it was a resource issue that was having a noticeable effect? Not just some side effect?
God knows how you managed to troubleshoot it to being a loose screw in the back of the motherboard. Must have been pulling your hair out before you got to that point!
I'd also join the crowd for recommending Process Explorer. Great little tool to have on your Windows.