No sound from speakers
Check the speaker cable connections — Ensure that the speakers are connected as shown on the setup diagram supplied with the speakers.
Ensure that the speakers are turned on — See the setup diagram supplied with the speakers. If your speakers have volume controls, adjust the volume,
bass, or treble to eliminate distortion.
Adjust the Windows volume control — Click or double-click the speaker icon in the lower-right corner of your screen. Ensure that the volume is turned up and
that the sound is not muted.
Disconnect headphones from the headphone connector — Sound from the speakers is automatically disabled when headphones are connected to the
computer's front-panel headphone connector.
Test the electrical outlet — Ensure that the electrical outlet is working by testing it with another device, such as a lamp.
Eliminate possible interference — Turn off nearby fans, fluorescent lights, or halogen lamps to check for interference.
Run the speaker diagnostics
Reinstall the sound driver — See Drivers.
Run the Hardware Troubleshooter — See Hardware Troubleshooter.
No sound from headphones
Check the headphone cable connection — Ensure that the headphone cable is securely inserted into the headphone connector.
Adjust the Windows volume control — Click or double-click the speaker icon in the lower-right corner of your screen. Ensure that the volume is turned up and
that the sound is not muted.
Mouse Problems
Check the mouse settings —
1. Click Start® Control Panel® Printers and Other Hardware® Mouse.
2. Try adjusting the settings.
Check the mouse cable — Shut down the computer. Disconnect the mouse cable, check it for damage, and firmly reconnect the cable.
If you are using a mouse extension cable, disconnect it and connect the mouse directly to the computer.
Check the BIOS Setup Utility program settings — Verify that the BIOS Setup Utility lists the correct device for the pointing device option. (The computer
automatically recognizes a USB mouse without making any setting adjustments.) See the BIOS Setup Utility Screens.
