Sony PCG-K215B Hardware Manual page 28

I cannot play a DVD when using two screens
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When you use two screens at the same time (LCD and TV / LCD and CRT), the following errors will occur:
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When you play a DVD with Windows Media Player 9, you can only watch the content on the primary display.
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You will not have a problem in the following situations:
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When you use a CRT or an LCD display on its own.
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When you play MPEG1 files which are recorded on the hard drive with Windows Media Player 9.
The reading speed of CD/DVD-RWs is very slow
Generally, the reading speed of a CD/DVD-RW is slower than that of a -ROM or -R. The reading speed can also vary depending on
the type of format.
The disc tray does not eject even when the eject button is pressed
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Check that the computer is turned on.
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The CD-writing application software may be stopping the disk from being ejected.
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Make sure the computer is not in Standby or Hibernate mode.
The disc tray ejects even when it has been locked into place
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Ensure that the disc is placed with the label side facing up.
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Clean the disc and the disc drive lens with an appropriate cleaner.
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The disc may be scratched. Place another disc to see if that is the reason.
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There may be condensation in the drive. Remove the disc and leave the drive open for approximately one hour. Remove the
battery while you wait for the condensation to disappear.
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Using your VAIO computer