The answer is simply..if you dissasembly the screen,in the back there is the number of the model of the lcd screen and you search the lcd compatible,but the 3d and no-3d version of g75 have different pin connector for the lcd, so if you have the no-3d version of g75 you only replace with another no-3d lcd and the same with the 3d version..i have the no-3d version and have change the lcd because service centre in my country is shi.t and it's simply,you can change a lcd no-glare with glare version or hd version with full hd,but only this..the no-3d version have the CHIMEI INNOLUX N173HGE REV C1 for the full hd version but i don't know for the 3d version..