OC Edition

Hi everyone, Recently my Sapphire r9 270x Toxic 2GB OC Edition not working properly. The problem : OS (Win 10) goes into restart loop after installing graphics driver. What i have done so far : So i uninstall Graphics driver using DDU while on safe mode. Then restarted my pc and GPU works...

I got an error 43 on my gpu after a blackout. Then I reflashed the bios doing exactly what a bunch of videos told me too, the software told me to restart the pc i clicked yes and they did restart it, problem is now my pc is on but my monitor is not getting a signal from my pc.

Sup all, With a CM Hyper 212 evo i get 50-52c max @ idle !! id like to OC it in the near future, my questions are: is it too high ? Is it the chip ? or just too much thermal paste ? ... Heres i a screenshot i took with HWmonitor Tnx in advance guys. I appriciate the help ^^