Hi: I do not know whether this is a problem related to the monitor, processor or the hard drive. My display on the monitor suddenly blinks just as in standby/monitor off modes. Sometimes the blinking is so bad I cannot do any work. Can someone please help me? I have just formatted my PC, loaded my original XP pack and original Office 2007 and installed a Kasperesky anti-virus package (since I was told that my PC was infected). But the problem persists.