Trouble with Dual Monitors and Vista, PLEASE HELP!

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#1 Posted by GoldenBuffalo (118 posts) -
Okay, so I have 2 monitors attached to a ATI Radeon x700, one VGA and the secondary DVI.  So, the secondary works for a little while, but sooner or later it always turns off like its in an energy saving mode.  But its not.  It just goes black and says no input.  Does anyone have any ideas of why this is happening?  Is my video card over heating?