Dell S2440L 24" Monitor

Hi jediem,

You can run a self test by following the steps below and see if it is an issue with the monitor:

• Power off the computer and monitor.  
• Unplug the video cable from the back of the computer. To ensure proper Self-Test operation, remove the Analog (blue connector)cables from the back of the computer.  
• Turn on the monitor. 
• The floating dialog box should appear on-screen (against a black background) if the monitor cannot sense a video signal and is working correctly. While in self-test mode, the power LED remains white. Also, depending upon the selected input, the dialog shown below will continuously scroll through the screen. 

• This box also appears during normal system operation, if the video cable becomes disconnected or damaged.  
• Turn off the monitor and reconnect the video cable; then turn on both the computer and the monitor.  

If the monitor screen remains blank after the customers use the previous procedure, check the video controller and computer, because the monitor is functioning properly.

You can also perform a factory reset of monitor and see if it helps:

1. Press any key to launch the OSD menu and press   to display the main menu.
2. Press the Up and Down arrow buttons to toggle between options in the Menu. As you move from one icon to another, the option name is highlighted. 
3. Navigate to 'Other settings'.
4. Select 'Factory reset'. 
5. Check if it works.

Please share the findings.