Plz describe your installation steps.
In General, your laptop has a different GPU than mine. I have integrated Intel HD300 which is natively supported by OSX 10.8.2 and later. You have either AMD or nVidia card which may require additional kexts on your USB installer. For nVidia cards you may also need NVEnabler64.kext to inject the correct graphic device info and make sure you boot with "Graphics Enabler = Yes" in boot flags.