Ok well i have linksys internet?

my linksys internet doesnt work on the computer in my living room but works on the one in my parents room because they have the main linksys adaptor.I even bought a new adaptor called belkin and it still doesnt work, but the computer in my living room works just fine,I thought the computer was broken but i went to go get everything erased from it and it didnt do anything i think just the internet is all screwed up. i have no clue whats wrong with it. i need help and i tried calling linksys and alls they said was to call belkin and i called belkin and they said to call linksys. idk what to do. i need help please this has been going on for mounths!