Hmm I just replied to your post in the ProcMon thread. Anywho: no you can't capture a screenshot AFAIK; and no it's something related to your Hardware. So it's altogether quite unlikely that we can fix it -- however it doesn't neccesarily repeat itself; so you may be rid of it already. It sounds like a GFX card quits working altogether issue.

Try turning all the GFX settings down a notch or two. In particular AA and resolution settings.