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Monitor using 100% cpu and on the blink

Hi Everyone A couple of days ago my monitor went on the blink,(every 3 seconds the screen would show for like for a millisecond then go blank) then repeat the cycle. I changed the monitor and that one was ok. So i put the faulty monitor back on and back came the problem. Well for one reason or another i left the monitor plugged in but switched off,(by the monitor). Today i switched the monitor on and it seemed to be working ok but my computer was running slow,so i clicked on the task manager only to find my cpu running at 100%!!! I then changed monitors again and every is working ok,(cpu 0-2%). I then rebooted and back came the blink. Has anyone got any idea's?

Posted by Martin Duquemin on

  • 3 more comments 
  • smitto34 Nov 12, 2007

    I have the same type of issue. The differance is mine continues to flash on and off, less than a second at a time. I changed monitors and computers. It is deffenitly a monitor issue. Any Thoughts? Thanks

  • Anonymous Aug 01, 2008

    i have the same problem turn on comp en light on monitor will going blink

  • house84 Feb 21, 2009

    sounds similar to my problem - don't know about cpu usage but screen just flickers on and off - i did find if i put it into sleep mode when i "woke it up" by hitting the space bar or jiggling the mouse, on about the third or fourth try it works. It seems as if the main power button isn't working prperly eith as when i push it, it doesn't always respond.

  • house84 Feb 21, 2009

    i forgot to add,apart from the blinking and power button not working, computer has slowed down significantly, I have defraged, done disc cleanup, uninstalled rarely used programmes and used the pc doctor programme on this computer but no use.

  • Anonymous Mar 25, 2014

    It starts ok and sometimes after 1 hour and sometimes after 5 hours it just goes off for 1 sec and then returns to normal. After that it works fine for anther 1 or 5 hours.



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Video card is plugged via DVI cable? If the board in the flat panel is going bad ( main signal pcb) video card can be going up and down scale to control its sync with no luck, causing the CPU useage problem.Only ever seen this once. Normally, the monitor will not cause and performance issues other than you cannot see anything.

Posted on Apr 29, 2007


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