Many sound cards also supply a mixer or volume control program that runs under Windows. Check the volume settings there, too. See you sound card documentation for more information. Random audio dropouts. Turn off any audio-enhanced screen savers.
Performance is slow.
Set your display at 640 x 480 resolution and set colors to 256. Consult your video card documentation for more information. CD-ROM appears in a small area of the screen surrounded by a black border. Graphics glitches there are lines or parts of the screen that appear garbled. You may have an outdated Windows driver for your video card.