Solving Problems 79Video and Monitor ProblemsCAUTION: Before you begin any of the procedures in this section, follow thesafety instructions in the Product Information Guide.NOTE: See the monitor documentation for troubleshooting procedures.If the screen is blankEN S U R E T H A T T H E C O R R E C T A U D I O S O L U T I O N I S E N A B L E D I N T H E BIOS S E T U PP R O G R A M — See "System Setup" on page 174.CH 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 —• Ensure that the graphics cable is connected as shown on the setup diagram foryour computer.If an optional video card is installed, check that the monitor cable is connected tothe card, rather than the video connector on the system board.• If you are using a graphics extension cable and removing the cable solves theproblem, the cable is defective.• Swap the computer and monitor power cables to determine whether the powercable is defective.• Check the connector for bent or broken pins. (It is normal for monitor cableconnectors to have missing pins.)CH 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 thebutton to ensure that the monitor is turned on. If the power light is lit or blinking,the monitor has power. If the power light is blinking, press a key on the keyboard ormove the mouse.TE 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 bytesting it with another device, such as a lamp.CH E C K T H E D I A G N O S T I C L I G H T S — See "Power Lights" on page 81.
