Try to delete these 2 files: in the sgminer folders (nicehash miner)
amd_opencl32.dll
amdocl.dll
it should detect them.
Hey! That worked. I can now see the card on nicehash miner. But now when I try to benchmark I get a BSOD and a frowny face

(gotta love windows 10). The error says SYSTEM_SERVICE_EXCEPTION (atikmdag.sys).