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Hi there i have a sony viao laptop pcg-7121m, there is no power to the display so when i switch on the laptop the power button lights up but there the screen stays blank, how can i try and trace back the power going to the display. or does anyone know what the problem may be? thanks in advance

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Try holding down the function button on the keyboard and tap the F key with the (O) symbol above it, Its the symbol for monitor. You may have to press them a few times. That will toggle computer from its external only monitor mode. If not then hook up an external monitor to the computers vga jack and try again. If you get the external monitor to work that way and not the built on display then the built on display will need replacing and if it does not go to working at all then its most likely a motherboard issue. If the external display does work then you can continue to use it that way until you get the screen repaired/replaced.

Posted on Aug 25, 2010

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