Something that might help, i formatted my computer and reinstalled windows 7 ultimate 2 times. the first time i didn't have any problem. but the second time tells me that that my windows 7 product key is not valid. i retype it and itt doesn't work.. This means the trial period has expired. the product key from the sticker on the side or bottom of the computer is for windows only and will not work in office. to continue using office, you would need to purchase a full version.. You get a windows 7 product key when you purchase windows operating system for one or more pcs. windows product key is a 25-character code. it is used to activate the os. the product key verifies that windows has been used on given numbers of pcs that the microsoft software license terms allow..
Windows 7: sticker product key doesn't work after system re-install. windows 7 home prem 64bit. 3 posts sticker product key doesn't work after system re-install. hi guys, unfortunately the product key from the sticker on the bottom of my machine doesn't work - no idea why. no i've 29 days left :). The product key system is complicated to understand because microsoft doesn’t really want typical windows users to reinstall windows on their pcs. instead, they’d rather you use your computer manufacturer’s recovery media.. A product key number can only be activated on 3 computers at the same time if it is one that came with a retail family pack copy of windows 7. otherwise, you can only have a retail product key number activated on only 1 computer at a time, with it uninstalled or removed from any other computer it was activated on first..
