"Verification failed, check hardware!"

[kwoody]

I recently replaced a 6950 card with a 7950 card. The 11.1 drivers I was using on the 6950 were not compatible with the 7950, so I deleted the 11.1 driver, manually deleted the associated files in system32 and syswow64 folders, and installed 13.4(latest) drivers. It appears to start mining but as soon as a share is discovered it throws up an error "verification failed, check hardware", I've been told that there's an opencl issue between the software/hardware that causes the shares to be invalid. I've tried installing multiple different driver sets, like 13.1 as people had good results with that, but that gave me a huge error.

any advice...?

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[Zanatos666]

Use driver sweeper to make sure you didnt miss anything when uninstalling 11.1 and try again.