I purchased a new ATI 7970 vid card. My prev one was an ATI 5850. I'm having problems getting my vid card drivers/card to work.
ASROCK X58 socket 1366 mobo, intel i7 920, 12 GB ram
Corsair TX750 W power supply. It has four PCIE power cables with the 6+2 pin connectors
-installed a new Samsung 830 SSD system hard drive
-installed Windows 7 64-bit from scratch.
-did all Windows updates.
-the generic Windows vid driver works fine. It can drive my LCD at full resolution.
-downloaded the latest ATI Gfx drivers, Catalyst v12.6 and installed it, then rebooted
The screen is garbled. Lots of horizontal lines. The inputs (password input text box, for example) show up if you hover over them. I snapped a pic and uploaded it here. http://i49.tinypic.com/2nl6643.jpg
I did a System Restore to a point prior to the 12.6 driver install and deleted all ATI/AMD folders on the drive and in the registry, then tried to install driver version 12.3. I got the same results.
I tried swapping the PCIE power cables to some molex-to-PCIE connectors and got the same results.
You seem to be on top of it... I would try the card on another pc if possible, thats all I can really think of. at the moment.
Edit: just noticed you said the windows catalog produced drivers that worked. They are usually early ones. No too sure but whats the earliest version of catalyst that works with the 7970? you could try that.