HP L1940 HP L1740 17" and L1940 19" Flat Panel Monitors User Guide - Page 38

Troubleshooting Problem Image appears blurred, indistinct, or too dark. Image is not centered. "Check Signal Cable" is displayed on screen. "Out of Range. Set Monitor to 1280 x 1024 @ 60Hz" 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 Auto Adjust button on the front panel. If this does not correct the image, 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 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, or, if connected, check the DVI-D signal cable to the DVI connector on the computer, or the VGA to DVI-I cable to the VGA connector on the computer (DVI available on select models only). Be sure that the computer power is off while connecting the video cable. Restart your computer and enter Safe Mode. Change your settings to a supported setting (see "Factory Preset Display Modes" table in Appendix B). Restart your computer so that the new settings take effect. A-2 User Guide