Forget and Reconnect
Click the Wi-Fi icon on your taskbar.
Click > to Manage Wi-Fi connections.
Find your SSID Wi-Fi and right click Forget.
Connect to your Wi-Fi by typing the password again.
Request a New IP Address
Press Windows + R and type cmd
Type ipconfig /release, this will release your current IP address.
Type ipconfig /flushdns, this will flush your DNS cache.
Type ipconfig /renew, your laptop will request a new IP address from the router.