Try logging into the pc in Safe Mode.
Are you using Windows 7 Home Premium?
If so, create another admin account and then log in to that new admin account and see if the screen still goes blank.
Hi Danny, I am running Windows 7.
What I did was I created new Administrator and standard user accounts. The problem still occurs but interestingly enough it doesn't happen in safe mode.
Now, I am suspecting it might be my video drivers.
I've noticed when I overclock the GPU the settings aren't shared between the profiles either. In GPU-Z and or CCC they display different. If I OC the GPU 800/1050 in the admin acct then shut down and reboot into the standard account the stock settings 760/1050 will display. I find that odd because I think they should remain the same for all profiles.
1. Switching between user accounts doesn't work unless in safe mode (video drivers aren't loaded there).
2. In normal Windows boot after logging off either account I will see the desktop of the newly opened account momentarily but then the screen goes black. The computer does not shut down.
3. Video settings aren't shared between accounts.
So I'm thinking I may try re-installing the drivers. You agree?