This Dell forum is a little slow. Try the Cnet Computer Help forum.
You can be sure many will ask what's in task manager at high percentages and about your malware protection.
I'm using windows 7 for the last 5 months without any trouble. But recently I'm facing a problem frequently, when I start the pc the cpu usage is almost 100 percent. Whenever I do any task the cpu usage is constantly 100 percent and the pc acts very slowly. Please advise me.