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100% CPU usage...FIX


fairytinx's Avatar
fairytinx fairytinx is offline
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Join Date: Jul 2010
19-Jul-2010, 06:06 AM #1
100% CPU usage...FIX
Hi all,

I had the 100% CPU problem but have now managed to fix it, so thought I should post how I fixed it as I've seen so many people with the same problem:

My PC (A compaq desktop, XP, SP3) was running a little slow so I decided to reformat it. After I had finished the reformat the problem became a whole lot worse. I then found out that my CPU (SYSTEM process) was running at a constant 99 - 100% so I scanned with all sorts of scanners to no avail. I then ran process explorer (great prog!). Process explorer found that USBPORT.SYS was running at 99%. I then went to the device manager and disabled all usb ports, The CPU dropped instantly. I have a bought a PCI-USB card and am now happily using those PCI-USB ports without any problems.
I hope this helps some of you ;-)

Process Explorer:
Phantom010's Avatar
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Trusted Advisor with 33,967 posts.
Join Date: Mar 2009
Location: Cyberspace
Experience: Advanced
19-Jul-2010, 09:06 AM #2
Your problem is quite common and I've used Process Explorer to discover USBPORT.SYS as the culprit on a few occasions.

Process Explorer is indeed a great tool. I even replaced my Task Manager with it.
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