This error may also appear on a blank screen backdrop if the monitor is plugged into the incorrect port on the computer or if the computer is frozen and needs to be rebooted. The 'No Signal' or 'Check Cable message' may indicate a problem with the monitor's cable connection with the video card. If this does not rid the monitor of a black screen, the monitor may be experiencing hardware failure. If the power indicator light shows green, the contrast or brightness levels may be set too low and should be adjusted via the OnScreen Display. Blank Screen or 'No Signal' Error b> Like other monitors, Acer computer monitors feature color-coded power indicator lights. Much like the display resolution, each monitor also has specific monitor refresh rates with which it is compatible. b> 'Input Out of Range' b> Some Acer computer monitors may report an 'Input Out of Range' error message due to incorrectly set monitor refresh rates. Maximum resolutions vary according to the specific monitor model and according to the capabilities of the computer's video card. The G24's maximum display resolution is 1920x1200 with a 60Hz refresh rate. 'Input Not Supported' Error Message Acer computer monitors such as the G24 may issue an 'Input Not Supported' error message when users set the display resolution too high. Some reviewers have also detected image problems with DVD playback on some models. Acer computer monitor problems include common issues such as dead pixels, error messages, and blank screens caused by incorrect connections. Some monitors offer wide-screen viewing, embedded speakers, high-definition visuals, and various display connection ports. Acer's monitors range from 17 inches to 27 inches. Acer produces a number of LCD computer monitors.

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