VGA single not shown on led

@gurmeetsin55517 Let us know if you are you using a dedicated video card or the one that is integrated to the motherboard. Let us know what you have check. you definitely need to check another monitor to see if this is a monitor issue. You can of course also try the monitor on a different computer to make sure it is working. If you are using a dedicated video card, you may need to remove it and clean the contacts with a pencil eraser. Just use it lightly, no reason to do it forcefully. After that reseat it. If you are using an integrated video, I would try and get a dedicated card. See what that shows.

Download the service manual for your Computer [https://dl.dell.com/manuals/all-products... |from here} It will help you to work on it.