But it won't affect your internet access. The yellow exclamation mark indicates that your local connection has not obtained a legal local IP, because your local connection is set to automatically obtain, so you can set an IP at will to solve it.

Your yellow exclamation mark is the reason why the driver is not installed or installed incorrectly. If you are a system above XP, install the driver wizard directly, because the driver wizard comes with a network card driver, and general network cards can drive it. If not, go to another machine to install and correct the corresponding driver. If you say that dial-up internet access only appears to do this, it is not a network card, but a cat driver. Before 2000, the system did not integrate the cat driver.