My friend recently restarted his old account but when he logged into the game everything was completely dark as if the gamma was very low and certain objects were flashing black stripes. I think that I have had this issue before and found a solution but if someone could point me in the right direction that would be helpful seeing as my search came up fruitless. He is running an NVIDIA so it is not the GTI problem and all of his specs are pretty close to top of the line. He is also running windows 7 but I distinctly recall having the exact same issue on my old computer which was using XP.
Any help would be greatly appreciated.