If your system screen is flickering and is not responding normally after you have installed the updated version of Norton antivirus. Run a troubleshooting process and fix the error, you can download and apply a tool to fix the persisting error on your system. The first thing you can try to fix this problem is to restart your system and then check whether the issue resolved. If the screen nuisance still occurs, do the below-listed steps to purge the error- Step 1: Turn on your device in a safe mode- First take an exit from all the programs. Hold down the Ctrl + shift + Esc keys simultaneously and release when Task Manager window appears.  On the “File” menu, click on the “New Task” option and proceed to run it. Enter “msconfig” in the below field and hit the enter key. This will open the “User Account Control” window and hit yes or continue whatever the option shows. In the system configuration window, select Safe boot and hit the Network option. On the Windows XP...