Hmmm... very strange indeed.. It's funny cause I literally just got my 10v a couple of days ago, and I'm dual booting Windows 7 Ultimate and Snow Leopard 10.6.2, on BIOS A06 yet, and I haven't had a single problem (Outside of dealing with cruddy Windows bootloader.)
This might be elementary, and please don't take this as an insult or anything, but are you sure you got a 10v and not a 10? Or one of the newer models of mini's?
If nothing else, I would suggest booting to Windows USB stick and completely formatting your drive and then giving it a try. Perhaps something with that Dell Restore is causing a problem.