See image. Not seeing a GPU workload option to switch to compute mode. Running an RX 580 black core edition, driver version 17.12.1, win 7 professional edition. Did a clean install with the updater and again with the amd clean uninstall utility, still don't see the setting.
This isn't stated anywhere in the official documentation How to Switch Between Graphics and Compute GPU Workloads Within AMD Radeon™ Settings
And tech support didn't say anything either.
All tech support said was to use DDU and try again, which is worthless. I guess consider this a warning, compute mode doesn't work on Win7.
You can see how this is confusing. Up for 12 GPUs on Win10, but how many on other OSes? The answer is zero apparently.
I have this same issue and I can't find a solution anywhere. I'm about to sell these cards back to the vendor and get nvidia instead.
The same here with Sapphire Nitro+ RX580 8GB Special Edition using 17.12.2, also together with Windows 7 64 Bit Professional.
Don't have to upload a picture because it would look the same as yours :-D