ginger

Have m17xr4 for 2 years now decided to replace my gtx660m to 7970m and nightmare begins, can't instal any drivers dell.nor amd while instaling goes to black screen and stuck or if it pass the driver instaling then freezes at windows boot logo. rly frustrated right now don't know what to do. went throu few fresh windows instals no different at all, and fn+f7 not work either if i do that i get black screen and beeps. any suggestions ?