I have got myself into a bit of a mess.
I installed my version of windows starter on my mom's PC which was previously running vista. To see if it improved the performance or if the laptop itself was rubbish. It did so I purchased an upgrade to windows home premium. When I enter the upgrade key it says I need the current key is invalid for upgrade and that I need to phone a number. Does this mean the software I brought is useless. I didn't want to buy a disc as I had read that using a upgrade key meant everything was kept. Is there anyway I can use the software I've brought. The computer recognises the key as an upgrade one.