DT Lite, Power ISO, Alcohol120 all broke!! can't mount anything anymore!!

I've been using DT Lite foreer as well as Power ISO.
I was installing some games with DT Lite and then when I tried to install another one, it wouldn't mount! so I uninstalled , reinstalled and still cannot get either one to mount anything!!!!

I have no idea what went wrong, but all I was doing was installing games.

I'm on W7 SP1
using: DTLite4471-0337


PLEASE HELP!!!!!!!!!!!!