I have no idea what is wrong. I thought it was a virus, but no scans detect anything. This has been happening alot. My monitor will tell me to "check the signal", or it just won't come on. Cntrl, ALt, Delete does nothing I have to push restart. I just now got my system started after restarting 4 times. It also has shut itself off by itself the other night. Anyone have any ideas as to what I should do?