I’ve have a a laptop from HP that came with a Windows Anytime Upgrade disc. I foolishly believed that the upgrade was free so I installed (I’m assuming, emphasis on blindly) Windows Vista Home Basic (?) blindly. I didn’t realize until after I tried to put in the product key on the bottom of the laptop and was told it was invalid. My question is how do I downgrade back to my Windows Vista Basic? Do I have to use a restore point or can I even use one?