78 Solving ProblemsIf the screen is difficult to readC H E C K T H E M O N I T O R S E T T I N G S — See the monitor documentation forinstructions on adjusting the contrast and brightness, demagnetizing (degaussing)the monitor, and running the monitor self-test.MO V E T H E S U B W O O F E R A W A Y F R O M T H E M O N I T O R — If your speaker systemincludes a subwoofer, ensure that the subwoofer is at least 60 cm (2 ft) away fromthe monitor.MO V E T H E M O N I T O R A W A Y F R O M E X T E R N A L P O W E R S O U R C E S — Fans,fluorescent lights, halogen lamps, and other electrical devices can cause the screenimage to appear "shaky." Turn off nearby devices to check for interference.R O T A T E T H E M O N I T O R T O E L I M I N A T E S U N L I G H T G L A R E A N D P O S S I B L EI N T E R F E R E N C EAD J U S T T H E WI N D O W S D I S P L A Y S E T T I N G S —Windows XP1 Click Start→ Control Panel→ Appearance and Themes.2 Click the area you want to change or click the Display icon.3 Try different settings for Color quality and Screen resolution.Windows Vista1 Click Start → Control Panel→ Hardware and Sound→ Personalization→Display Settings.2 Adjust Resolution and Colors settings, as needed.