I'm trying to help a friend get his 5830 running on the new WCG HCC GPU app but Boinc keeps displaying the error message No usable GPU found. Right above that message it says Couldn't get device IDs for platform#0 error-1.

We've updated the drivers, updated boinc, reseated video card, nothing works. The card shows in the device manager, his display works fine and he can play videos. Anyone have any ideas on this one?

Win XP SP3

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It may have to do with the OpenCL support for WinXP.
http://devgurus.amd.com/thread/159613

I have the same card and drivers on my XP machine and it works fine but I will give your suggestion a try. Thanks

It was the drivers. There is no APP SDK runtime support for XP in any driver above 11.8 and that is needed to run the tasks. I can only guess that my version 12.3 drivers are working because I just installed them over the previous one. That may also explain why I got BSODs when I tried to update to 12.4.
Thanks for the help.

It was the drivers. There is no APP SDK runtime support for XP in any driver above 11.8 and that is needed to run the tasks. I can only guess that my version 12.3 drivers are working because I just installed them over the previous one. That may also explain why I got BSODs when I tried to update to 12.4.
Thanks for the help.

Actually, the last AMD driver with OpenCL support for Windows XP is 12.1 - as you can check by looking at C:\AMD\Support\12-1_xp32_dd_ccc\Packages\Apps\OpenCL after letting the download package unpack itself, as the first stage of driver installation.

It is indeed unfortunate that AMD's documentation differs so widely from the distribution packages it is supposed to describe.