1. uninstall 360 first.
2. Is the start-run-ftopt fixed? Click Yes and click Repair.
3. Start-Run-ftopt Click No to not repair, and the login box will pop up.
4. Log in and uninstall with the password 1234. Restart the computer immediately.
Turn on the computer at one o'clock, press F8 to enter safe mode before the Windows progress bar appears, and then turn on drive C..
Step 1: Enter the program file folder, open Tools-Folder Settings-View in the toolbar, unhide the protected system files, select Show hidden files and folders, and click OK to delete the Fit 3 folder.
Step 2: Go into the Windows folder and delete several files in "dll" format and "exe" format starting with "ft". Then open Tools-Folder Settings-View in the toolbar, select Hide Protected System Files and Unshow Hidden Files and Folders, and click OK to restart the computer.
Step 3: Use the Windows optimizer to clean up junk files and useless registry information, and use the advanced tools in the main interface of 360 security guards to select LSP repair tools for repair, otherwise you will not be able to surf the Internet because of hijacking application settings.
Please copy the above steps to a notepad file and save it on your desktop, in case you can't connect to the Internet after entering safe mode and forget how to continue the operation.
Download and reinstall again.