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.
Like all Dell computers, the Latitude uses a unique service tag as the laptop's serial number. This service tag uniquely identifies your computer and allows Dell technicians to quickly pull up your Latitude's hardware configuration.tep 4. Start the computer and repeatedly press F2 as the system boots to enter the setup. Typically, you press F2 when the Dell logo appears, but repeatedly pressing F2 helps avoid mistiming this key-press. Look for Service Tag in the information list on the first setup screen.