Some screen objects don't move as they are supposed to. You may have a problem with your display driver. Restart Windows to have your changes take effect. If the errors don't occur after you switch drivers, your display driver may need updating. Contact the graphics card manufacturer to see if there is an updated Windows display driver for your graphics card.
Manufacturers frequently update their drivers.
Check the volume control on the sound card. Use the sound mixer application that came with your sound card to check and adjust the volume. Make sure that the speakers are correctly connected to the proper jack on the sound card. Make sure that you've installed the appropriate Windows and MCI sound drivers, using the Drivers control panel. If you can't a play a sound in Media Player, then you won't be able to play it in your multimedia application.