Okay....So...Acer kind of sucks.
The only EASY way to do a Factory Default Reset is to have ALREADY (before ever using the computer for anythign) burned a disc that has the factory settings.
Basically, as soon as you get the computer home, you need to burn the factory image.
If you start using the computer BEFORE doing this....then the factory settings have been changed......and you can no longer make this copy.
So...you are stuck with doing it the LONG way.
I mean if you truly want a factory default computer again......its going to be a fairly long process.
I suggest you just remove the problem files/software that you transferred over.
That should fix the issue.
Or you can reinstall windows, but that requires that you have the Windows install disc.
Which you probably dont have, because windows came WITH the computer.....and thus they dont bothe rgivign you a copy.
A Factory Reset, is not an easyt proces unless you do some PREparing first.
See the image link below i pulled fomr the Acer guide.
Notice the part about having to ALREADY have created the factory default disc.