Hello everyone! So my brother has a laptop which is kinda old, it has an i5 5200u, 8GB of RAM and an AMD R7 260M GPU. He recently reinstalled his Windows 8.1 and after installing GPU driver (latest) it wasn't working properly. The GPU doesn't even work when running a game or something, it stays running on iGPU. Then we tried 15.7.1 driver because I saw on some forum that that driver is the best but no luck. Then we tried a driver from 2014 but no luck. The interesting part is that some of these drivers (I think the latest) stops when installing, and it won't finish, unless you run it again and it kinda is installed then, but still doesn't work.
And with older drivers, they install fine but in the drivers options there are none, just some system info and that's it. No power management and other things for laptops.
Is there anyone that had the same or similar problem, or has the same gpu that could tell what version of drivers he or she runs?