Dell Alienware M15x Owner's Manual page 58

If the display is difficult to read
Adjust the brightness:
Press <Fn><F4> to increase brightness or <Fn><F5> to decrease brightness.
Adjust the Windows display settings:
Windows Vista
®
1. Click Start Control Panel
→ →
Personalization Display Settings.
→
2. Adjust Resolution and Colors settings, as needed.
Windows 7
®
1. Click Start Control Panel
→ →
Resolution and Calibrate color, as needed.
2. Adjust
Connect an external monitor:
1. Shut down your computer and connect an external monitor to the
computer.
2. Turn on the computer and the monitor, and then adjust the monitor
brightness and contrast controls.
If the external monitor works, the computer display or video controller may
be defective. Contact Alienware support (see "CONTACTING ALIENWARE" on
page 73).
58 CHAPTER 6: TROUBLESHOOTING
Hardware and Software
→
Appearance and Personalization
→
Mouse
The mouse is not working
• Check if the mouse cable is properly connected to the USB connector on
your computer.
• Check if the mouse cable is damaged. If the mouse cable is damaged, the
mouse will most likely need to be replaced.
• Restart your computer.
• Try a mouse that you know works in the same connector, to ensure that the
USB connector is working.
• Reinstall the device driver.
Display.