Having problems with your ViewSonic VA720 17" LCD Flat Panel Monitor ?

Monitor is on when computer boots up , then turns off

\015 I have a Viewsonic VA 720 monitor 19 inch, when computer boots up can see windows xp screen starting up, then turns off for a couple of seconds, then boots into my windows media center screen, then turns off. I can get the monitor to display by hitting the power light but last only for a few seconds, LED light is green, power supply is green. I have tried it connected to my laptop and same problem. Power options is always on with monitor said never to turn off. I have replaced the VGA cables to my desktop and to my laptop and still have the same problem. I can go see my monitor if i hit the power off and on switch but it stays up for a few seconds only\015

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