My notebook cpu won't start up. You can hear the inside running but the screen stays blank, nothing shows up. What could be wrong with it.Someone please help. Thanks in advance.in the back is says model pcg-8l3l and in the front it says pcg-grz610
Try connecting to a monitor to rule out a faulty display. You might also want to remove the battery and disconnect the power supply, then attempt to switch on. This discharges the capacitors which can sometimes prevent a computer from succesfully booting back up.
Mike
November 2005
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