My PC, hp envy 15 touchsmart, cpu performance get spykes to 100%, all attempts to restore failing, malwarebytes won't run, and when I leave the machine on, after a while I get some screen saver with the time and a woman with a red Hat and blue Blazer. I can't open screen saver setting, it I select "change screen saver" on the dialog box, the woman screen saver comes up always. What could be the problem?