There seems to be problems with the Acer e1-572g using the R7 M265.
This has partly to do with the ULPS ( Ultra low power state).
It is advised to turn that off in the registry.
Here is how to:https://community.amd.com/thread/176003
Also , after updates the card can remain disabled completely.
So, how can you turn it on again.
I found a thread of how to do it in OS10.
I know you have OS 8.1
But i assume the solution is the same and independent of the operating system.
Here is the thread:https://community.amd.com/thread/207027
The correct answer is from xpz24 on 6-nov-2016.
I wish you good luck.!