Here are some steps to prevent programs from starting automatically on your computer:

1. Disable unwanted start-up programs from Task Manager.
2. Enable the Windows Firewall.
3. Create an additional admin account.
4. Perform regular scans to detect malicious software:
   • Run Windows Defender.
   • Install third party anti-malware programs.
   • Disable auto-updates on your apps and programs.
5. Keep your apps up to date.
6. Create strong passwords for your user accounts.