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Screen blank on PB G4

Discussion in 'Apple Mac' started by Chewits, Nov 11, 2007.

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  1. Chewits

    Chewits Thread Starter

    Nov 11, 2007
    I have a Powerbook G4 1.5 12" with 1.25 GB ram.

    It is around 2 years and 10 months old. I use it everyday for various things from music production to surfing the net and playing some games.

    Problem started when I had Warcraft 3 in a window and was doing other things on the internet. Computer completely froze, and the grey screen with all the languages stating that computer has to restart etc. So I restarted, and it loaded up. I loaded up Warcraft 3 again, and after a second it froze again. It stuttered in a 1sec loop. So i forced shut it down by holding shut down button for 5 seconds. Then i turned it on, and now there is nothing on the screen. it is completely blank. So worried, I unplugged everything and just ran it on the powerbook with the power plugged in ( I was using an external monitor via DVI slot) But still the screen on the laptop was not even coming on.

    I can hear the start up sound of the mac, and can hear the hard drive spinning away. I left it for a while, but still same problem.

    So I tried placing the mac cd in to boot from CD, but only problem is, my internal CD drive has been broken for ages, and I just use an external firewire drive. So I am not sure how to boot from external drive. DO you still just hold down the C button? Anyway, I tired that, and still screen is blank.

    So i plugged my mac to another mac using firewire cable and use my mac as an external drive. This worked, and everything on my hard drive seems to be intact.

    So I am thinking the video card has gone? I tried searching online for spare parts for my mac, but I can't seem to find a part specifically for the video card? Is the video card embedded on the logic board? Or is it separate?

    Much help would be appreciated.

    Many thanks
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