Hi, I'm wondering whether anybody can help in shedding some light in what may, or may not be wrong with my late 2008 aluminum unibody macbook? Just to clarify early on, there is NO way the macbook has been in contact with water or any sort of humid conditions. Basically it's suffering with a couple of issues, one being the screen has a permanent flickering line horizontally across the whole screen (thicker on the left) about 2 1/2 inches above the bottom. Ironically depending on the angle of the screen it can disappear (or when i hold the screen in a specific way). Does anybody have any idea what this could be? Also during the last couple of days the colour of the screen has been flashing purple albeit, rarely. Another problem I'm having is when I've booted my macbook up, I can hear the fan whirring quietly but there's nothing on the screen, and there's also nothing on the keyboard (i.e. no backlight). After about ten minutes of consistent attempts of trying to reboot it, it worked. I successfully reset the PRAM and there's been no problems yet, although I won't hold my breath. I've also checked the memory and apparently it's running healthily. The current spec of my machine is:- Model Name: MacBook Model Identifier: MacBook5, 1 Processor Name: Intel Core 2 Duo Processor Speed: 2.4 GHz Number Of Processors: 1 Total Number Of Cores: 2 L2 Cache: 3 MB Memory: 4 GB Bus Speed: 1.07 GHz Boot ROM Version: MB51.007D.B03 SMC Version (system): 1.40f2 Serial Number (system): 739320d28QT Sudden Motion Sensor: State: Enabled If anybody has any information, it'll be greatly appreciated, thanks! It's also using a NVIDIA GeForce 9400M.