problem after switch from nvidia to amd

[gitaron]

Hi. I have just upgraded my gtx 650 to MSI r9 280x.
When i wanted to start my pc alter installation of new gpu. My pc didnt start up, it just stuck in boot with no beep from bios or anything.
Then i move Little switch on r9 280x from posiotion 2 to posiotion 1 and my pc finalny boot up. But now I have problem with driver and my pc detect gpu as amd apu Series.

 

[Suztera]

What is your full pc specs?
Did you uninstall previous gpu drivers?
i don't find the AMD Auto detect tool reliable. The AMD Catalyst 14.4 should be the drivers you want.

 

[JuniorPCBuilder]

Uninstall the Nvidia drivers and install the newest AMD drivers.

 

[gitaron]

I have cleaned driver from Nvidia with driver sweeper. And installed ati 14.4 driver anyway
And gpu is detected as hd 7900 Series. But When i want to Play any game i recieving error that amd driver stoped working

 

[gitaron]

My pc is
I5 3340
16gm ram
Gigabyte h1 ds2 motherbord
And cooler master 600w psu