I've recently experienced connection trouble, and troubleshooting states that what written in the title is the issue. This also affects wifi (won't connect), and I can't go to router settings (typing 192.168.0.1). It just says the website can't be accessed, like all other websites. My router is set to WAP and is connected to a modem+router box. My OS is Windows 10. The connection icon at the desktop is displaying the yellow triangle box with an exclamation mark. How do I fix this issue?