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Computer won't find my other Radeon 5770

Last response: in Graphics & Displays
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November 7, 2010 10:23:30 PM

I recently built a gaming rig with two Radeon HD 5770s (manufactured by Diamond) hooked up. I ran GPU-Z to see how stressed they were when playing certain games. But when I ran it, I noticed it didn't recognize my second graphics card. I checked device manager and it also didn't recognize the other graphics card.

I opened up my computer and made sure the pci-e power connectors were connected properly and that the card was seated properly. Those both checked out. I then tried reinstalling the drivers which also did nothing.

Here's the thing though, when i first built my computer (Beginning of August), crossfire worked perfectly and GPU-Z, Device Manager and the Catalyst Control Center both recognized the graphics cards.


I'm not too much of a computer whiz so i'm hoping it's just something I overlooked in the BIOS or something small like that.

any suggestions?

thanks!

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Windows 7 Ultimate x64
Radeon HD 5770 x2
AMD Phenom II x4 965
4GB GSkill Ripjaw DDR3
Asus M4A88TD-V Series Motherboard
Intel 40GB SSD
Hitachi 1TB and 2TB Deskstar HDDS
Corsasir 750W Power Supply
a c 189 U Graphics card
November 8, 2010 11:00:35 AM

Where did you install driver/OS? In your SSD? IF yes then you might have problem with compatibility issue...
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November 8, 2010 1:27:47 PM

yea, pretty much all drivers are installed on the SSD

Would it be worth a shot to reinstall the drivers on a regular HDD or does the OS have to be on an HDD as well?
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a c 189 U Graphics card
November 8, 2010 2:18:26 PM

umm, i don't know, but many issues with SSD when it comes to drivers.
So, i guess you must try it out, you can install OS and drivers on Hard drive, meanwhile all games on SSD...
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