SET UP a firewall to include an extra layer of protection. A firewall acts as a barrier between your personal computer and potential threats. It monitors inbound and outgoing connections, blocking unauthorized access to your system and preventing malicious data from entering or exiting your community.Restarting your pc clears its memory and closes background processes. This is a simple yet effective way to refresh one's body and enhance performance, especially for those who have been using your computer for a long period.