Quote Originally Posted by Mumps View Post
Well, one quick little thought is how you installed BOINC. Did you by chance install it as a service so it would automatically start at each boot? If so, that commonly means it won't have access to your GPU's.

Also, with what you posted from GPU-Z, it looks like you don't have OpenCL support installed? That's not necessarily installed with the default version of the driver package that AMD distributes. I'm not familiar enough with what you need extra to get those capabilities installed though. I seem to recall it requires the Dev pack too? Somebody else more familiar with GPU crunching needs to step in here.
Quote Originally Posted by nanoprobe View Post
There is no OpenCl driver support for XP above version 12.1.
http://www.filescrunch.com/download/...splay-drivers/

Make sure you install the APP SDK package and the video driver. Anything else is optional. There is also no OpenCl driver support for any 7xxx series card on XP.
Quote Originally Posted by kmanley57 View Post
I think you are looking for the 'SDK' part of the driver to get the needed OpenCL support.

Thanks all-

I had already installed the APP SDK packages and made sure BOINC wasn't installed as a service... I think I got bad information on the internet (gasp) about ATI OpenCL support on XP - my search suggested 12.4, not 12.1. That would have been good to know a couple of days ago; I shouldn't be so impatient!

My whole point in installing XP64 on this machine was a PCI wireless adapter that I can't find Win7 64 drivers for, but after 3-4 days of loading OS, updating, installing drivers, restarting and repeating - the process wore me down. It was obviously a Windows XP64 issue, so I scrapped it and installed Windows 7.

Everything is running fine now (except the wifi adapter, of course).