cannot install hd 5770

I always format when changing mobo or video card. It prevents any potential problems (such as this) from creeping up.

Best of luck though. Sounds like it might be a bad card. In the future though instead of completely formatting, try making a separate partition (or separate HD) and installing a fresh OS on it and use the latest everything. That way you know whether or not a format would be needed depending on if it works in that new OS install. Sure as hell beats nuking and paving everything for nothing.
 
I dont know if anyone care because I think most of the one with this problem will RMA the card but here it is:

Further investigation results:

With "suggested drivers" from amd.com, 8.66.

IDLE testing

Had GPU-Z to log everything it reads
idle GPU-core voltage = 0.95v (according to HWmonitor)

Total crashes:4
Initial time: 21:42:50 pm
Final time: 3:03:13 am

Time of crashes
1. 23:10:51
2. 23:11:49
3. 2:15:32
4. 2:50:22

Findings, during all of the crashes speed and temperature changed dramatically. Clock set at full speed and temperature making a jump from 45°c to 51°c in less than 30 seconds! sometimes even 1 second according GPU-z and in the 2nd crash going from 46 to 54 in one second too! All of them recover successfully and no BSOD or force shut down was necessary.

All of this crashes happened during idle and/or very low user input activity.

This is by no way a driver problem! but more of a firmware/hardware one. RMA your cards!!
 
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