Sony VGN-U750P VAIO Read This First Manual page 60

I cannot play a DVD
❑ If a region code warning appears when you are using the DVD player, it could be that the DVD you are trying to play is incompatible
with the DVD drive on your computer. The region code is listed on the packaging of the disc.
❑ Change the resolution under Control Panel - Display to a lower resolution.
❑ If you see video but cannot hear sound, check all of the following:
❑ Make sure the mute setting is off on your DVD player.
❑ Check the Master Volume settings of the Sounds and Audio Device Properties.
❑ If you have connected speakers externally, check the volume settings of your computer speakers and check the connections
between your speakers and the computer.
❑ In the Device Manager, check that the correct drivers are installed properly. To display the Device Manager, click Start, then
Control Panel. Click Performance and Maintenance and then the System icon. On the Hardware tab, click the Device
Manager button.
❑ A dirty or damaged disc may cause the computer to "hang" while it tries to read the disc. If necessary, reboot the computer, remove
the disc and then check that it is not dirty or damaged.
❑ Check your PG settings (Parental Guidance) in the DVD software as they might be preventing you from playing certain DVDs when
they are activated.
I cannot play a DVD when using two screens
❑ You will not have a problem in the following situations:
❑ When you use a CRT or an LCD display on its own.
❑ When you play MPEG files which are recorded on the hard disk drive with Windows Media Player 9.
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Using your VAIO computer