Right, in my case I've found the root cause. (The installation errored after about ten minutes) Many moons ago, an AMD driver installer fucked up royally and I had to remove the drivers manually, ...

I'm switching from an ATI card (RMA'd 5970) to an nVidia (GTX580). Everyone says I should use something like Driver Sweeper or Driver Cleaner to clean out old drivers first. I don't mind paying the ...