Its a Samsung Sync-master. It just went to sleep and would not wake up. The computer does not recognize it. It does power on and if the cable isn't connected it displays that it has no connection. It also flashes digital/Analog as it does if you disconnected. The buttons on the side. The menu does not display but some other buttons do work. Pretty much everything is fine except the PC dont recognize it and the menu is not displaying. I'm stumped.