well i have the game fate undiscovered realms and i have a bunch of mods for it they worked on my computer that has xp and i recently bought a new laptop that has windows 7 and i cant seem to make the mods work
Those mods aren't windows 7 related. They are game related. They should work since it's the same game. You probably installed the mods in a wrong location or something.
You're better off asking at some Fate Undiscovered realms forum.