iv got a g750 not long ago andsuddenly my screen starts flickering. its not always but its more often then not iv read on somewere that its a manufacturing problem,anyone heard of it ?

hi im completley new here! iv got a asus rog G750js and iv just bought a ssd disk i wanna put my windows 8.1 in. seems like the windows is built into the original harddrive, so when i try to reinstall my windows i dont get the options to chose wich h...