Sony VGC-JS450F - Manual (Page 88)

88 n N
Troubleshooting >
Computer
Computer
What should I do if my computer does not start?
❑ Make sure your computer is securely plugged into a power source and turned on and the power indicator light shows the
power is on.
❑ Disconnect all connected USB devices (if any), and then restart your computer.
❑ Remove any extra memory modules you may have installed since purchase, and then restart your computer.
❑ If your computer is plugged into a power strip or an uninterruptible power supply (UPS), make sure the power strip or UPS
is plugged into a power source and turned on.
❑ Make sure the brightness and contrast controls are adjusted correctly.
❑ Unplug the AC adapter. Wait three to five minutes. Plug the AC adapter again and press the power button to turn on your
computer.
❑ Condensation may cause your computer to malfunction. If this occurs, do not use the computer for at least one hour.
❑ Check that you are using the supplied Sony AC adapter. For your safety, use only the genuine Sony AC adapter, which is
supplied by Sony for your VAIO computer.
❑ Make sure your computer is not in Sleep mode by pressing the power button on the computer or the sleep button on the
keyboard. If you press and hold the power button for more than four seconds, your computer will turn off automatically.