I am reinstalling a computer for a friend who has very little computer knowledge. The system would not boot up due to some problem and with no documents or save games at steak I went for a full reinstall.
So I have the windows cd that came with the machine and a code on a windows sticker stuck to the back of the machine. I reinstall, and everything goes swimmingly until I repeatedly get 'PRODUCT ID NOT VALID'. The windows CD seems to definately be the one that came with the machine as it has MESH printed all over it as does the machine.
I have tried two different possible installation cd's and two different keys. Does anyone have any idea how I can go about solving this problem?