My beloved late 2008 Macbook unibody is beginning to show signs of aging. It started several weeks ago with the screen turning redish - everything would be visible but colored in red. This has gone, but a new problem has started. Whenever I power on the Macbook, the screen remains black, but I can hear the beep. Sometimes the screen does turn on but then after the loading bar/white screen, it turns black again. I need to rinse and repeat hard reset a million times to get it started, normally it takes me 20 minutes to finally get it to boot successfully. As soon as its on, it works flawlessly and I've got no problems with the screen, but this means I cannot switch it off. Does anybody have a clue what this could be?