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.
Dell Update application. Clicking in the Detect drivers button will allow Dell to scan your PC by installing Dell Update application. Dell Update is a small tool automatically updates critical fixes and important device drivers when they become available. It is also available as a direct download here at Dell.