Did you move your ../My Desktop folder to a volume other than C:\?
If so, that could be the issue. Go into your C:\ drive and make a Desktop folder:
C:\Users\My Name Here\desktop
This is better than messing around with the original installer or downloading and running an .exe from a stranger (aka, CIA agent) on the internet.
Yes, unfortunately here at work this pc's have roaming profiels so folders like desktop are on the network not localy, that must be the reason, anyway I have a mac at home I am going to install windows in a parallel vm and try.
Cheers,