Problem Solution
The playback is slow or choppy.
• Disable any background programs, such as AntiVirus or Desktop
Themes.
• Ensure that video resolution is less than 1152 x 864 pixels.
A message indicating invalid disc or no disc
found is displayed.
• Ensure that the disc is in the drive with the shiny side of the disc
facing down.
• Ensure that video resolution is less than 1152 x 864 pixels.
• Ensure that the DVD or CD is inserted into an appropriate optical
drive. For example, do not insert a DVD into a CD-only drive.
Serial connector problems
Problem Solution
The serial connector cannot be accessed.
• Connect the serial cable from the serial connector on the computer
to the serial device. If the serial device has its own power cord,
connect the power cord to a grounded electrical outlet.
• Turn on the serial device and keep the device online.
• Install any programs supplied with the serial device. Refer to the
documentation that comes with the serial device for more
information.
• If you added one serial-connector adapter, ensure that the adapter
is installed correctly.
USB device problems
Problem Solution
A USB device cannot be accessed.
• Connect the USB cable from the USB connector to the USB
device. If the USB device has its own power cord, connect the
power cord to a grounded electrical outlet.
• Turn on the USB device and keep the device online.
• Install any device drivers or programs supplied with the USB
device. Refer to the documentation that comes with the USB
device for more information.
• Disconnect and reconnect the USB connector to reset the USB
device.
• Ensure that the Smart USB Protection function is disabled in UEFI
BIOS.
Chapter 5. Troubleshooting, diagnostics, and recovery 49
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