Cant install iTunes on windows 8

Cant install iTunes on windows 8 laptop I've done every thing even restored my laptop to previous dates but i keep on getting the error iTuneshelper was not installed properly please re-install iTunes Error 7 then it changes to ITunes was not installed properly please re-install iTunes Error 7(Window error 5). ive cleaned my registry even did a system integrity check and my laptop seems to be runing fine