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check both the System and Multimedia in Control Panel to ensure that you have the
proper settings for your sound card (consult your sound card/audio subsystem manual
and your Windows documentation). Check your software to verify that the volume
settings are not turned off.
No sound when playing audio CDs
Most likely cause: software driver not loaded.
One or more of the steps described below may require you to work inside your computer. Please
read the WARNING at the beginning of this chapter before you proceed.
1. If you have Windows XP, Windows 98, Windows Me, Windows NT, or Windows 2000
check both the System and Multimedia in Control Panel to ensure that you have the
proper settings for your sound card (consult you sound card/audio subsystem manual
and your Windows documentation). Check your software to verify that the volume
settings are not turned off.
2. Make sure your audio CD is not upside-down (see “CD-ROM Drive,” Chapter 3).
3. Remove the system cover (see “Opening Your Computer Case,” page 6-10) and verify
that you have a small audio cable connecting your CD-ROM and sound system. This
cable is different than the large flat ribbon cable that connects your CD-ROM to the
controller. Refer to your CD-ROM and/or sound card documentation for more information.
Keyboard
System does not recognize the keyboard
Most likely cause: improper keyboard connection.
1. Verify that the keyboard cable is properly installed (see “Identifying Ports” in Chapter 2).
2. Try another keyboard (if possible) to isolate the problem.
Mouse
The mouse cursor does not move or moves erratically
Most likely cause: loose mouse cable or mouse driver is not loaded.
1. Ensure the mouse cable is securely connected to the mouse port or COM port (see
Identifying Ports” in Chapter 2). If you have a loose connection, reseat the cable. Serial
mice should function properly at this point. You will need to reboot your computer if you
have a PS/2 mouse.
2. If the mouse is the type that has a mouse ball underneath it, remove the mouse ball and
clean it and the rollers. Use a cotton swab moistened with rubbing alcohol to clean your
mouse rollers. Do not use water.
3. Some mice include software that extends their functionality. This software may conflict
with other software or hardware in the system. Un-install this software and restart the