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How to stop svchost.exe using up 100% system resources in Windows XP:

First of all, to identify if you have this problem you need to press CTRL+ALT+DEL all at the same time, go to the “Processes Tab” and then press “Mem Usage”. If you have this svchost.exe memory leak bug after about 1 minute you will see that the amount of memory usage svchost.exe uses will keep increasing until CPU becomes 99 or 100%.