when u buy them...do u have a limit on how many time u can use them? like a limit on 3 computer or something? or theres none. cuz im afied that everytime i reformat..it counts as i used it on another computer...

There is no limit as to how many times you use the disk. But you can only use the key once (usually).

 

 

 

 

 

 

 

If you've reformatted then it doesn't count as a 2nd computer - so you can still use it.

wat key? the valid key thing? that means i only can do it once..does it..?

From a legal point of view:

 

 

 

 

 

 

 

If it is a consumer version: you are allowed to have it installed on as many computers as you want, but only one at a time.

 

 

 

 

 

 

 

If it is an OEM version: you are only allowed to have it installed on one specific computer - meaning if you change your motherboard it counts as a different computer and you must not install it again.

The only way you can use a Microsoft OS or Microsoft Office program on more then one computer at a time with the same product key (serial number) is if all the hardware in both computer are the same

The only way you can use a Microsoft OS or Microsoft Office program on more then one computer at a time with the same product key (serial number) is if all the hardware in both computer are the same

 

 

 

 

 

 

 

Like your reply here, that isn't true.