I fully removed the latest Catalyst drivers that I tried initially, and tried the 12.11 Beta drivers as suggested above. Shares are now being Accepted!
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I will keep an eye on my fan and adjust speed as needed to keep it well below 80
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Thank you!
Interesting.
I use 13.1 with cgminer on windows 8 and have no issues with my 5770.
Also, 81*C is
not too hot for a video card on load. Although the long-term damage will be greater with greater heat, this is still cool. I personally start to worry as I approach 90*C. The cards usually throttle to protect themselves around 100+*C. A lot of 4870s that regularly ran over 90*C experienced electromigration issues a few years later.
I recommend GPU-Z to monitor your temps. I have to watch my 6950 doesn't go above 102.5*C or it will start to throttle. I wouldn't recommend that temperature for anyone. The only reason I am fine with it is because of XFX's warranty. I've already had to get them to replace the fan once.
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So another bit of advice is to not run your fan regularly above 80-90% to avoid the heavy wear causing it to break.