I did not have this problem with Windows 7.
Yes, I understand that, but....
I wouldn't expect nor suspect that for some reason all your USB ports on the motherboard stopped working all of a sudden either.
My first guess would be a driver problem, produced by perhaps, a recent Windows update, although I would think that you would still have basic functionality.
It's seriously problematic, as you have no means of input. Do you have a basic generic keyboard and or mouse laying around that you could perhaps use for testing?
OR.... old school, if your computer still has PS2 ports or combo port you might go with that to get over the hump. Just remember PS2 is plug and play but not hot swappable, so the computer will need to be off when you plug it in or rebooted after you plug it in.
Other than that, you might try safe mode to see if the generic drivers will give you some functionality.
From the advanced troubleshooting screen, choose startup settings and then #4 (plain safe mode).