Verification failed, check hardware!

[pgbit]

Yes, went through this all too, and the above recipe works well. In essence, you need to remove the later graphics card drivers and re-install an older version of catalyst. I could not find a work around with the newer drivers installed searching elsewhere etc. (i.e googling). It might be worth trying the next version of catalyst perhaps, when it emerges, to see if that fixes this issue. Suspect it wont, but anyone please post here if they find it does!

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[nonstopdncer]

Just tried this fix & it has worked a treat! Thank you so much. 

[kwoody]

I've been having this same problem. I switched from a 6950 to a 7950 and got all kinds of errors trying to use 11.1. I updated to 13.4. Errors. Used driver sweeper, tried 12.8 and 13.1, neither worked. Then I resorted to formatting my boot drive and installing fresh 13.1 drivers. "Verification failed, check hardware" as soon as it tries to produce a share. Card works fine for everything else, done other openCL stuff with it, threw some game benchmarks at it, everything seems fine...  i am sadface

[CybeRoky]

I've been having this same problem. I switched from a 6950 to a 7950 and got all kinds of errors trying to use 11.1. I updated to 13.4. Errors. Used driver sweeper, tried 12.8 and 13.1, neither worked. Then I resorted to formatting my boot drive and installing fresh 13.1 drivers. "Verification failed, check hardware" as soon as it tries to produce a share. Card works fine for everything else, done other openCL stuff with it, threw some game benchmarks at it, everything seems fine...  i am sadface

I have the same problem with 13.9 :/
but work fine with 13.1  wird..

I have 5770 card

[bandyleg]

Hello, Firstly I would like to thank deepceleron for his efforts and inputs!!

This fix may not be perfect but it certainly works!!

Secondly it only works if you follow the instruction correctly,  I had the same issue on my HD7970 (cayman) it worked a treat so again thank you.

For any one else just trying out mining that is struggling to get gui miner to work then give this a go. If you cant find the 11.11 driver then try softpedia as I couldn't seem to find it on amd's site.

If you are going to try and squeeze every inch of life out of your GPU then do so with caution and do not use the the CCC over drive infact just disable it and use another OC program.

This should see you running smoothly.