I can confirm that deleting the file atikmdag.sys does fix the black screen bug. Was able to do it while doing a driver install via Safe Mode was the only way, however, in the Device Manager, it's showing a exclamation mark in a triangle saying and in the General tab after restarting into normal mode, it says:
"This device is not working properly because Windows cannot load the drivers required for this device (Code 31)
The requested operation was unsuccessful."
Looks like the bug is in the file making the black screen issue.
Yeah right now im sending AMD some DxDiag logs with different results, i will hang on the atikmdag.sys file and ask them if this might be the problem, i will copy and paste the answer of them next day.
Thanks for your reply
OMG! I'm having this problem for a few days!
Even described it here: Experienced flickering and then black screens after AMD driver auto update with my r9 270x
Tried what you said and it did got passed the black screen. But it does not solve the whole problem as pointed out.
Not sure if you had any further response from AMD, but I appreciate the effort!
I was thinking that my GPU might be faulty, but maybe it isnt after all....