Quote from: spectator999 on November 28, 2017, 04:33:13 PM

Quote from: TheOATeam on November 28, 2017, 04:21:27 PM

Hey Mr. S.

Are you using windows 10?
If so, have you fully updated it?

Your previous configuration had windows 8, but are you sure of which software has been installed? How about Windows updates on this machine? Its possible that you are missing something in your newly installed windows that came from an update on your old machine (depending on how new the installation is, it may take a few days for it to get all of the updates it needs).

Thanks for the reply. Using Windows 8.1 Pro, which is definitely installed. All updated after each re-install too. I't driving me mad, I can't see any difference from before the re-install. Miner config files are the same as before, indexes correct and cpu mining disabled in the config.

So, I finally fixed the issue. Originally my GPU's were attached to a gigabyte AMD motherboard. When I upgraded the motherboard to the ASRock H81, I just moved the GPU's and SSD from the AMD mb to the ASRock mb, and they worked straight away. When I re-installed Windows, the GPU's wouldn't mine anymore. I figured it must have been something residual from the AMD motherboard drivers that allowed the GPU's to work after the hardware swap. As I couldn't reinstall the AMD motherboard drivers while the hard disk was still attached to the ASRock motherboard (I tried), I swappped the motherboard back to the AMD, re-installed the AMD motherboard drivers, swapped the motherboards again, and now the GPU's work.

Maybe something to do with Open CL 2.0?

There's probably a much easier way, but it works again.

Thanks again

Mr S