I am at a bit of a loss too my friend. Are you sure you administrative permissions? I assume you are, but just double check as you must make sure you can install drivers. It seems that the system is preventing this. If you can overcome this, then the rest of the solution is simple.
Do you have a login screen where you put a password? If yes, then at that screen, hit ctrl, alt, del - twice in rapid fashion. THis should allow you to login as administrator. Once there do the following:
Download this and install :
http://downloads.emachines.com/drive...44-001-002.exe
Restart
Download and install this:
http://downloads.emachines.com/drive...24-001-001.exe
Restart.
In the meantime i will ask a MS specialist to have a look at this thread and help ok?
thanks