The screen on my older Sony laptop broke. Bought the identical model laptop on Ebay for cheap (no OS installed/no software) to transfer the screen. Was wondering if I used my restore discs on the ebay laptop (with the ebay laptop's xp key - not my original), would this cause issues as far as activation is concerned? I'm assuming that the restore discs do not have any unique indentifier and that when I restore the ebay laptop and enter its xp key (which was originally preactivated by the manufacturer), I shouldn't have any issues at all and it will have no effect on the activation of my original laptop?