ATI Radeon 4870 slowing down ( intermittent)

[arjfca]

Hello

I did start another similar post few weeks ago, but problem still not resolve

http://www.sevenforums.com/graphic-cards/221223-intermitent-graphic-card-slowing-down.html

Occasionally, my Asus EAH4870 DK card is slowing down. My system use 4 screen monitors. 2 are driven by the GPU card, the others 2 are driven with USB external graphic card

Once in a while, about 3 time poer day, my screen driven by my Asus card, slow down. The refresh is erratic. When I move the mouse over my screen, it did not follow the movement as fast as it should.

To resolve the problem, I unplugged the DVI cable from one of the screen while PC is running. Few second later, I re plug the DVI cable and all came back to normal.

Since the PC was running while I unplug the cable and re - plugging it, I don't think that is is related to a temperature problem. Look like the driver are restarted when I plug it back.

Could it be a Windows 7 problem?

What could cause that?. Any idea how to resolve the problem?

I don't have another GPU card, so it is difficult to determine if it is a physical problem
or a driver one

Martin

 

[James7679]

http://www.sevenforums.com/graphic-cards/221223-intermitent-graphic-card-slowing-down.html

 

[arjfca]

http://www.sevenforums.com/graphic-cards/221223-intermitent-graphic-card-slowing-down.html

Thanks James, I edited my post