I have an Asus ROG GL702V and I turned it off to go outside. When i returned indoors I turned on the laptop and the screen does not function. The fans still spin up, the LED indicators still work, and the USB ports Still work. It will not display on an internal monitor. I have tried resetting it several times, even disconnecting the battery and I've reseated the ram. Still nothing. I fear it may be a GPU or motherboard failure but I thought an expert's opinion would be welcome.