Removal of 5D software

Hi, Some of my Canon software is not working correctly, Ver 22.4 that came with a 5D MkII. I have uninstalled it all except the Canon 5D WIA driver will not go. Each time I perform add/remove in Control Panel, it performs what appears to be a remove operation, then askes for a reboot of the PC which I do, then when the PC boots up again the Canon 5D WIA driver is still showing. Any suggestions on how to remove it so I can do a new complete install again? Thanks,

I should add that I have used a registry cleaner to remove all un-linked items of Canon software and the program still appears in the "Add/Remove" control Panel stttings. Thanks

Try asking your question in the Canon EOS-1D/1Ds/5D forum. You might get a better result.
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Henry