If the screen on your TV is flickering, the first thing to do is determine what the cause is. We can do this with some simple testing.
Click Run to launch the software. Dell System Detect will display your service tag and computer model number. 5. Visit the Dell Product Support for Home Users page (link in Resources). Enter your Service Tag number in the applicable box and click Submit.. A new page displays more information about your desktop model.
Instructions. Close the screen of your Dell Latitude laptop. Turn the laptop over. Look for a tag containing a five-to seven-character code that includes numbers and letters. This code is the computer's serial number.The tag is located near the middle of the back of the computer, on a thin white strip.On Dell laptops, the serial number is also referred to as the service tag.nstructions. Close the screen of your Dell Latitude laptop. Turn the laptop over. Look for a tag containing a five-to seven-character code that includes numbers and letters. This code is the computer's serial number.