Something wrong

After formating my computer and installing windows over again everything works fine on my computer but after i installed aim and mIRC for some reason they dont work like they used to, i keep getting disconnected or they wont work for some reason i dont understand why can someone help me?

did you try uninstall them and intstall them again?

yeah i did i reinstalled windows 4 times..and it still didnt work..everything else works but aim and mirc...i dont understand why i keep getting disconnected