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Graphics card xfire switch from vista to 7 wont work

Last response: in Graphics & Displays
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February 1, 2010 4:31:46 AM

could someone please help. I have been running xfire for about 1 year and i built my own pc and bought the vista os with free upgrade to 7. Yet before that i was running windows 7 beta perfectly with xfire. So i came to the conclusion to run vista drivers on my new copy of windows but that didn't work even though that is how it worked in the past. So i then took out both graphics cards and tried them one at a time but only one gave me a display. Did i forget someone because there is no way i card could go from good to bad after an hour install. allso the card i am running are 4850's gpu'z detects 1 of them but stress tests work them equally on load. But main reason i want them working is because i run 4 moniters. Please instruct me on what i forgot
February 1, 2010 5:12:26 AM

glick06 said:
So i came to the conclusion to run vista drivers on my new copy of windows


why are you running vista drivers on a win7 machine? download and install drivers for windows 7 please. Also, make sure you get teh correct version (32bit vs. 64bit)

Go here for 10.1 Catalyst drivers http://support.amd.com/us/gpudownload/Pages/index.aspx
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February 1, 2010 5:16:24 AM

oready ran the lastest drivers didnt work
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February 1, 2010 5:44:22 AM

Did you disable crossfire for use with 4 monitors? You can check this in CCC (ATI Catalyst Control Center)

Also, are you plugging in the additional pci-e 6pin power connectors for each card? Is your PSU strong enough to handle two 4850's? Make sure you spread the load across different rails if you're using a PSU with multiple 12v rails..
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February 1, 2010 5:43:09 PM

ya its fooling me. single rail psu 60 amps connectors are in. Im gonna test voltage on both power conectors. think maybe its a bios issue and i have a pci slot disabled.
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