Game Works on My PC but Not on Friend's PC

[farmermcon]

I copied a game from my main PC, where it works perfectly, and tried running it on my friend's computer.
But it doesn't work there.
Any idea what could be the problem or how to fix it?

 

[peterppp]

could be a million things. more info needed. what game is it and what happens when you try to run it?

 

[mahsta]

why would you use your friend's pc? and if the game works on your primary pc just use that then. maybe your friend's computer is setup differently or not compatible with the game maybe

 

[rayminator]

need more information

like:
games name
operating system