HP L1502 HP Flat Panel Monitors L 1702 and L 1502 - (English) User Guide - Page 35

Troubleshooting Problem Image appears blurred, indistinct, or too dark. Image is not centered. "Check Video Cable" is displayed on screen. "Input Signal Out of Range" is displayed on screen. Possible Cause Brightness and contrast are too low. Position may need adjustment. Monitor video cable is disconnected. Video resolution and/or refresh rate are set higher than what your monitor supports. Solution Press the Minus button on the monitor front panel to auto-adjust the screen. If that doesn't work, press the Menu button to open the Basic OSD Menu, and adjust the brightness and contrast scales as needed. Press the Menu button to access the Advanced OSD menu. Select Image Control/Horizontal Position or Vertical Position to adjust the horizontal or vertical position of the image. Connect the 15-pin monitor video cable to the VGA connector on the computer. Be sure that the computer power is off while connecting the video cable. Restart your computer and enter Windows Safe Mode by pressing the F6 Function key when the computer starts to boot up. Change your settings to a supported setting . Restart your computer so that the new settings take effect. Using the Worldwide Web Before contacting customer services, refer to the support Web site at: http://www.hp.com/go/support A-2 User's Guide