I have a r9 290 reference card that was starting to run too hot so I took it apart cleaned all the dust out and put new thermal paste on. Now when I boot up the computer black screens after the Windows logo and loading circles screen. But every once and a while after the logo loading screen I will see the loading circles again but with no logo this time and then everything starts up fine and has no problems. If I restart again without changing anything it will start to fail again. I have no idea whats causing it to work sometimes and not right after.
Things I have tried so far
1. Starting in safe mode removing all AMD drivers restarting and installing all drivers again (Will black screen when the driver downloads again even before restarting)
2. Took the card apart again cleaned off thermal paste and put more on
3. Changing how tight the heat sync is screwed on
It seems like there is something happening when the drivers first kick in and if it makes it past that then everything is fine.
Any help would be greatly appreciated.