Dual monitors not working

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Zenoxio

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Jul 17, 2006
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I had a dual monitor setup working just fine. I have changed nothing. Two LCD screens into my Radeon HD 5850.

Now it'll work if I plug a monitor into the top DVI on the video card; that's one monitor.

But if I plug the other monitor into the bottom DVI, suddenly both screens turn off (orange light on monitor power button) and my video card starts a high-pitched whirring noise, like a fan. I've never heard this before.

Any ideas?
 
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