Here are some tips to help troubleshoot internet connection issues:

1. Check the power cord for your modem and router. Make sure they are securely connected.
2. Reset your modem and router. Turn both devices off for 30 seconds, then turn back on.
3. Check if the LED light indicators are on for your modem and router. If a light is off, make sure it’s plugged it.
4. Check to see if the Ethernet cable that connects your modem and router is firmly installed.
5. Restart your computer.
6. Check for any unexpected system or application updates on your computer.
7. Check if any internet browser extensions, add-ons, or plugins are impacting your connection.
8. Check if your wireless channel is too crowded. Try to switch to another wireless channel.
9. Run a speed test to see is your connection is where it should be.