Hello guys... I'm in desperate need of some help. I'm at a loss of ideas at this point.
System:
AMD X4 955BE
ASrock 870 Extreme3 mobo
4GB OCZ Obsidian DDR3
Two ATI HD 5770
700w Tagan BZ Series Turbo power supply
1TB Caviar Black 7200rpm
Issue:
I have a 5770 that is, as displayed on the card, Revision 1. My roommate gave it to me in a trade for my two 8800s since my mobo didn't support SLI. At this point, I purchased a brand new 5770 of the same brand and model in the hopes to Crossfire them. This new card, as displayed on it, was Revision 4. This is the only difference in the two cards that I can observe.
If I plug the old card in, it works PERFECTLY. However, if I take the original 5770 out and put the new one in, no display will show. However, the fan runs at max speed constantly.
So we figured it could be a bad card, right? Well, I threw the new 5770 into my sister's rig and it worked PERFECTLY.
What we've tried:
-Swapping both cards into opposite PCIe slots.
-Checking BIOS for settings that would effect card... none.
-Updated drivers, flashed BIOS, etc.
Additionally, if we plug both cards in, Windows 7 only recognizes the original 5770! It won't even recognize that there's another card plugged in.
My power supply can easily handle two 8800GTX cards AND Windows 7 detected both of those cards when I threw them both in to troubleshoot and see if they would both be recognized.
All in all, we're stumped. I've even purchased a NEW motherboard. I upgraded from the ASUS M4A79XTD EVO to the ASrock 870 Extreme3. BOTH mobos would not detect the new 5770... yet it works on my sister's rig (which is Intel i7).
System:
AMD X4 955BE
ASrock 870 Extreme3 mobo
4GB OCZ Obsidian DDR3
Two ATI HD 5770
700w Tagan BZ Series Turbo power supply
1TB Caviar Black 7200rpm
Issue:
I have a 5770 that is, as displayed on the card, Revision 1. My roommate gave it to me in a trade for my two 8800s since my mobo didn't support SLI. At this point, I purchased a brand new 5770 of the same brand and model in the hopes to Crossfire them. This new card, as displayed on it, was Revision 4. This is the only difference in the two cards that I can observe.
If I plug the old card in, it works PERFECTLY. However, if I take the original 5770 out and put the new one in, no display will show. However, the fan runs at max speed constantly.
So we figured it could be a bad card, right? Well, I threw the new 5770 into my sister's rig and it worked PERFECTLY.
What we've tried:
-Swapping both cards into opposite PCIe slots.
-Checking BIOS for settings that would effect card... none.
-Updated drivers, flashed BIOS, etc.
Additionally, if we plug both cards in, Windows 7 only recognizes the original 5770! It won't even recognize that there's another card plugged in.
My power supply can easily handle two 8800GTX cards AND Windows 7 detected both of those cards when I threw them both in to troubleshoot and see if they would both be recognized.
All in all, we're stumped. I've even purchased a NEW motherboard. I upgraded from the ASUS M4A79XTD EVO to the ASrock 870 Extreme3. BOTH mobos would not detect the new 5770... yet it works on my sister's rig (which is Intel i7).