Dell YT465 Touch Pad or Mouse Problems, Video and Display Problems, No sound from headphones, 100

R U N T H E DE L L DI A G N O S T I C S — See "Dell Diagnostics" on page 81.

NOTE: The volume control in some MP3 players overrides the Windows volume setting. If you have been listening to MP3 songs, ensure that you did not turn the player volume down or off.

No sound from headphones

C H E C K T H E H E A D P H O N E C A B L E C O N N E C T I O N — Ensure that the headphone cable is securely inserted into the headphone connector.

AD J U S T T H E W I N D O W S V O L U M E C O N T R O L — 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.

Touch Pad or Mouse Problems

C H E C K T H E T O U C H P A D S E T T I N G S —

1Click the Start button, click Control Panel, and then click Printers and Other Hardware.

2Click Mouse.

3Try adjusting the settings.

C H E C K T H E M O U S E C A B L E — 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.

TO V E R I F Y T H A T T H E P R O B L E M I S W I T H T H E M O U S E , C H E C K T H E T O U C H P A D —

1Shut down the computer.

2Disconnect the mouse.

3Turn on the computer.

4At the Windows desktop, use the touch pad to move the cursor around, select an icon, and open it. If the touch pad operates correctly, the mouse may be defective.

C H E C K T H E S YS T E M S E T U P P R O G R A M S E T T I N G S — Verify that the system setup program lists the correct device for the pointing device option. (The computer automatically recognizes a USB mouse without making any setting adjustments.)

TE S T T H E M O U S E C O N T R O L L E R — To test the mouse controller (which affects pointer movement) and the operation of the touch pad or mouse buttons, run the Mouse test in the Pointing Devices test group in the Dell Diagnostics (see "Dell Diagnostics" on page 81).

R E I N S T A L L T H E T O U C H P A D D R I V E R — See "Reinstalling Drivers and Utilities" on page 108.

Video and Display Problems

Fill out the Diagnostics Checklist (see "Diagnostics Checklist" on page 153) as you complete these checks.

100

Troubleshooting