Have a Gigabyte GA-Z87X-UD3H mother board. thermaltake 850 PSU and trying to replace the gigabyte GTX 770 with a gigabyte 1070gtx ..computer radomly reboots.. sounds now are funny. and games are not smooth. i did uninstall all drivers/programs but still does it..put old gtx770 back in no problems? compatibilty issue or hardware? also have a i7 4770k