@Gargron I built a sweet system back in 2009, till a few weeks ago it stopped. I narrowed it down to something obscure in Windows not identifying any devices properly.

I backed up, partition-wiped, and reinstalled Windows - both 64 bit and 32 bit - still the same issue.

Out of desperation I booted off a flash drive running Ubuntu, and I'll be fucking damned if it didn't see everything correctly.

So now my workstation (i7-920/24GB/4TB) runs Linux full time!