The only way to "downgrade" from any version of Windows...is to have both a valid license
and a valid means of installing XP
I correct that...I believe that some OEMs (HP, etc.) provide "downgrade" capabilities on some of the systems they have sold...but I'm not sure.Specs for Your System
As I look at the specs for that system, it doesn't indicate that Win 7 was originally installed.
As for installing Win 95 or Win 98...you can install either/both, as long as you have a valid CD and license/key.
Edited by hamluis, 23 May 2010 - 10:31 AM.