Don't know whether this is a hardware or software issue.  Am using WinXP, SP3.  After computer is inactive for a while, say 1/2 hour, and then I start using it the screen becomes nearly unreadable or "grays" out.  Can barely see the mouse pointer.  Only after actively using the computer, i.e. opening a web page, playing solitaire etc does the screen then, after several minutes of use regain its normal clarity.  My monitor is a Dell 1130 21" CRT.  Video card is an ATI All-In-Wonder X800 XT.  Have not changed any sleep or power save settings.

Any suggestions?

Thanks for all replies.  

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