I've had a r9 280x for quite some time now, this summer though some issues started appearing and I'm not sure if it's the gpu or something else. Just as I'm playing, after a while, my PC will just freeze, no error no sound nothing it just remains there as if I have a screenshot open and I can still hear it working. Usually after a restart this stopped happening untill the next day. Yesterday though it happened 2 times in a row so I decided to try increasing the fan speed on my gpu by quite a lot and the issue didn't appear again during the rest of the day. Now my question is whether this was actually the problem or I just got lucky and it didn't happen again? If my GPU was to overheat, would the PC just freeze?