What is pf usage in the task manager?

Cpu usage spikes. When I open task manager is drops. Why is that?

  • I've turned off start up items in msconfig. Happens with IE or Mozilla. I'll be looking at pictures or surfing the web and suddenly I have problems with my mouse moving erratically or not moving at all. I open the task manager and the cpu usage is sometimes as high as 100%. However, not even 30 seconds after opening the task manager the cpu usage drops drastically. Does anybody know what could be causing this?

  • Answer:

    possibly a virus running in the background

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