Your not alone.
As for the crashes you have a choice.
Take the card apart and redo the thermal paste or send it back.
Computer Case Gateway FX6800-01e
800W Atx Power Supply
12 GB of ram ddr3
Intel cpu i7 920 2.67GHz
motherboard Gateway TBGM01
I bought this card from someone who had it for two years and it was all clean and like new when he sell it to me. He said he never overclocked it and always cleaned it every months and it worked well on his computer the other night to make sure everything was okay and I also could try it for five days before returning it. Each time I boot my computer it makes two quick beeps with different tones and then it runs like normal though if I put my old card the Geforce gtx 750 ti there's only one beep. Now my motherboard has a PCI Express 2.0 and the gtx 970 needs a 3.0 but I heard it will still works without any issues. When I play games like The Witcher 3, The Division, GTA V, it often reboots without any reasons, just a black screen like a forced reboot. Ingame I don't see any artifacts or weird graphic glitchs, and my GPU temp stays around 67C and cpu 40 - 50 C. Could anyone please help? I freaking love this card but I can't enjoy it... also I need to keep my side panel open all the time with a fan next to it because if I don't my card will overheat, and my case is really small so that could be it. Here's my pc https://www.youtube.com/watch?v=n7pXVBxzezc
EDIT: here you can hear the beeps https://www.youtube.com/watch?v=pwvFxxTFdig