i need help

well for a week now i can now join mpgh but before i couldnt join idk why i would get cannot display page and my internet was up but i only get this for 2 sites mpgh and gor-donsys other hack site today i can now join mpgh idk why and i just need to know how i can fix this thanks if its my host file i will need help on how to change it

yes but why did this happen i cant join this other site to gor-donsys why? and why this happen to mpgh also