1) Check your cable or DSL modem for any problems.
2) Check for any loose connections and restart your modem and router.
3) Ensure your network is secure with up-to-date firewall and antivirus protection.
4) Check if your ISP and internet services are up and running.
5) Perform a speed test to check that you’re getting internet as expected.
6) If the problem persists, contact your ISP for help.