Just gave it another go, lasted a whole 5 minutes before the gpu just shut off while under no stress. Mayne it's over heating so I took it apart, the last screw is way too tight and glued in, naturally strip it so I can't get it off kudos to AMD for that.
Actually it was under no load, I was in safe mode trying to run a gpu uninstaller to get rid of nvidia.
Time to take out a loan for a new GPU.....