troubleshooting Question

CPU usage is showing 100% even when no program is running

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fix2009Flag for United States of America asked on
Windows XPSystem UtilitiesPC
15 Comments12 Solutions933 ViewsLast Modified:
I caught up in situation where my laptop using WinXP sp3, is showing cpu usage 100% even when no application program is running. I restarted and uninstalled several software but doesnt make any difference.  In the task manager - Processes,   mostly seems like explorer.exe taking cup upto 40-50%, taskmgr is also 30-40%.  There are 9 instances of svchost.exe are running. I tried to close some, but then one of instance close caused the computer shutdown. I dont know how many svchost.exe supposed to be there?  Although svchost.exe doesnt show much CPU cycles.  There were 2 instances of CLI.exe, I closed both as those were also taking quite some cpu 20-40%.

Any help what can I do?  My laptop is crawling. It consistently showing cpu is 100% used.  My computer scan is running but that is too slow. It might take all night to finish up.

How can I check what is my latest registry change was made?
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