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.
DellÂ® computer To access the Dell setup or BIOS utility: Press the DEL key when rebooting. If the computer is a 486, the F2 key may be used instead. Dell Latitude To access the Dell Latitude setup or BIOS utility: Press and hold the F2 key before starting the computer.