If Malwarebytes or Avg do not run, then most probably a malware infection. See this thread and do exactly as directed: http://forums.cnet.com/7726-6132_102-5098912.html?tag=posts;msg5165373
Another choice is to download and make one of these on a separate computer ( same as in the Grif thread ) then boot to the new CD: http://antivirus.about.com/od/freeantivirussoftware/tp/avrescuecd.htm
My mother in law was trying to do her online classes and Firefox wasn't working very well,so she shut it and took a nap,and when she came back it was almost "taken over" by Windows media center.if she closes it,it comes back up.if she clicks on some program,it comes up.avg and malwarebytes won't run.downloads pull up wmc.a restart into safe mode still brings up wmc.I can't get system restore up either.anyone have any ideas?

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