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Are you using DVI cable to monitor?
If yes, update to newest Catalyst drivers and enable "Reduce DVI-frequency on hi-res screens" and "use alternative DVI" in ATI Control Center.
Also, vacuum all crud from graphic card heat sink, it might be overheating.
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Thank you for your time,
Last edited by beepbeep; 08-08-2009 at 02:10 PM..
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