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HD 5850 DX11 causes screen to turn off!

Last response: in Graphics & Displays
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May 14, 2011 12:02:59 AM

Hello everyone,

Here are the specs of the PC/HTPC I built:

-650W antec earthwatts

-Sapphire 5850 Xtreme 1gb

-4 gb G.Skill 1333mhz (9-9-9-24)

-AMD Athlon IIx435 2.9Ghz (stable 4th core unlocked)

-500gb Caviar black (32 mb cache)

-M4A78LT-M LE motherboard

-Monitor is a 42" Plasma TV (1080p)



This PC runs everything perfectly fine. The computer's core and gfx never go above 40C and 50C respectively. There is a hitch, though. Whenever I try to run any game (for example, Shogun 2 or Dragon Age 2), in DX 11 mode, the screen turns off, and I am incapable of doing anything beyond shutting the computer off via the button on my logitech keyboard. These same games, run in DX 9, work fine. Obviously, I purchased the HD 5850 expecting for DX 11 not to be a problem, so this irks me quite a bit.

Is there anything I can do?

Thank you for your time!

More about : 5850 dx11 screen turn

May 14, 2011 12:25:15 AM

I have to ask a REALLY stupid question, but what operating system are you running?
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May 14, 2011 12:47:56 AM

Wups totally forgot to say! It's Windows 7 Home Premium 64-bit
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May 19, 2011 11:33:31 PM

is your gpu overclocked??

try reinstalling dx11
does dx10 work??
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