well that's weird, because I had the same issue, only I rebooted my computer, and it's been idle all day, so my temps should be back down to ambient, but I get the same issues, (ie, it won't start even after being idle forever). I haven't had a chance to get home to see in person, this is all remote so far. So in case my cards went kaput, I'm at least getting video over RDP.
Soon as I get home I'll try to launch a video game and see what's up. It is getting super hot here in kansas, maybe my AC died at my house... but won't know anything until I get home
so meanwhile I'm not generating any btc