Troubleshooting
8 - 10 Problems & Possible Solutions
8
The sound cannot be
heard or the volume is
very low.
The volume might be set too low.
Check the volume control in the
Volume Control Panel
in the
Windows
taskbar, or use the key combination
Fn + F5
and
F6
(see
)
to adjust.
The compact disc cannot
be read.
The compact disc is dirty.
Clean it with a CD-ROM cleaner kit.
The compact disc tray
will not open when there
is a disc in the tray.
The compact disc is not correctly placed in the tray.
Gently try to remove the disc using the eject
hole (see
).
The DVD regional codes
can no longer be
changed.
The code has been changed the maximum 5 times.
“DVD Regional Codes” on page 2 - 5
Unwelcome numbers
appear when typing.
If the LED
is lit, then Num Lock is turned ON.
“LED Indicators” on page 1 - 6
Problem
Possible Cause - Solution
Other Keyboards
If your keyboard is damaged or you just want to make a change, you can use any standard USB keyboard. The system will
detect and enable it automatically. However special functions/hot keys unique to the system’s regular keyboard may not
work.
Summary of Contents for M521N
Page 1: ......
Page 2: ......
Page 20: ...XVIII Preface...
Page 82: ...BIOS Utilities 5 14 5...
Page 110: ...Modules Options 7 18 7...
Page 122: ...Troubleshooting 8 12 8...