Xbox games wont boot

[slayer_ps]

Ok heres the problem, i hire games to play cos i dont have many games yet, and it seems it doesnt matter wat game it is or anything i even had the video store clean the cds, basicly i go launch game from the menu part that has all the programs like hdd loader n stuff and it will try to load it it hangs on a black screen for 2-5 mintues sometimes and then returns back to the menu , sometimes when i launch the game from the msdashboard it will try and play hangs on the black screen and then returns to the exolutionx menu or sometimes it will just freeze on the msdashboard screen, have had the games i hired cleaned by the video store, ive allso made sure the date settings are correct i mean everyone knows when u hire a game its scratched to hell but like i said they cleaned it and yet my backup games and backup music and orignal music cds work, sorry if i reapted anything in this post but im trying to provide as much info as i can