eMachines H3120 - Manuel (Page 184)

Troubleshooting www.emachines.com
177
4 Click the Modem tab, then adjust the Speaker volume control.
5 Click OK twice to close the Phone and Modem Options dialog box.
Monitor
The screen resolution is not correct
Tips & Tricks
For more information, see “Adjusting the
color depth” on page 98 .
Change the screen resolution from the Display Properties dialog box.
Help and Support
For more information about
troubleshooting, click Start, then click
Help and Support. Type the keyword
screen resolution in the Search box,
then click the arrow.
The computer is running but there is no picture
■ Make sure that the monitor is plugged in and turned on. If the monitor is
turned on, the power LED should be lit.
■ Adjust the brightness and contrast controls to the center position.
■ Make sure that the monitor cable is connected to the video port on the
back of your computer.
■ Check the cable for bent or damaged pins.
■ Reinstall the device driver.
■ Connect a monitor that you know works to your computer.
The color is not uniform
Make sure that the monitor warms up for at least 30 minutes before making a
final judgment about color uniformity.
Make sure that:
■ Non-shielded speakers are not placed too close to the monitor.
■ The monitor is not positioned too close to another monitor, electric fan,
fluorescent light, metal shelf, or laser printer.
■ You demagnetize the screen using the monitor’s degauss feature. For
more information on degauss, see your monitor’s documentation.
Why is there a horizontal line or wire visible across the monitor screen?
Your monitor may use a thin damper wire, located approximately 1/3 of the way
down from the upper screen edge and 1/3 of the way up from the lower screen
edge, to stabilize the internal aperture grille. These wires are most obvious when
the monitor displays a white background. The aperture grille allows more light
to pass through the screen for brighter colors and greater luminescence. The
damper wire is a critical part of the overall monitor design and does not
negatively affect the monitor's function.