Sony PCG-NVR23 - Manual (Page 124)

Troubleshooting Your Computer
My computer does not start.
 Make sure the computer is plugged into a power source and is turned on.
 Make sure the power indicator indicates that the power is on.
 Make sure the battery is inserted properly and is charged.
 Make sure there is no floppy disk in the floppy disk drive.
 Confirm that the power cord and all cables are firmly connected.
 If you plugged the computer into a power strip or uninterruptible power supply (UPS), make sure the power strip or
UPS is turned on and working.
 If you are using an external display, make sure it is plugged into a power source and turned on. Make sure the
brightness and contrast controls are adjusted correctly. See the manual that came with your display for details.
 Condensation may cause the computer to malfunction. If this occurs, do not use the computer for at least one hour.
 Remove the battery from the computer, unplug the power cord and plug it in again, then turn on the power.
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