50 Solving Problemsw w w . d e l l . c o m | s u p p o r t . d e l l . c o mVideo and Monitor ProblemsIf the screen is blankNOTE: See the monitor documentation for troubleshooting procedures.D I S A B L E D I G I T A L M O D E — Your headphones do not work if the CD drive is operating indigital mode. To disable digital mode:1 Click the Start button, click Control Panel, and then click Sounds, Speech, and Audio Devices.2 Click Sounds and Audio Devices.3 Click the Hardware tab.4 Double-click the name of your CD drive.5 Click the Properties tab.6 Uncheck the Enable digital CD audio for this CD-ROM device box.C H E C K T H E M O N I T O R P O W E R L I G H T — If the power light is off, firmly press the button toensure that the monitor is turned on. If the power light is lit or blinking, the monitor has power. Ifthe power light is blinking, press a key on the keyboard or move the mouse.C H E C K T H E M O N I T O R C A B L E C O N N E C T I O N — Check the connector for bent or brokenpins. (It is normal for monitor cable connectors to have missing pins.) Ensure that the video cableis connected as shown on the setup diagram for your computer.T E S T T H E E L E C T R I C A L O U T L E T — Ensure that the electrical outlet is working by testing itwith another device, such as a lamp.S W A P T H E P O W E R C A B L E S — Swap the computer and monitor power cables to determine ifthe power cable is defective.T E S T T H E V I D E O EX T E N S I O N C A B L E ( I F U S E D ) — If you are using a video extension cableand removing the cable solves the problem, the cable is defective.T E S T A N O T H E R M O N I T O R — If another monitor is available, connect it to the computer.C H E C K T H E D I A G N O S T I C L I G H T S — See page 54.
