Why does the network connection disappear after a reboot?

Question

Computer networks

After restarting the PC (on board Windows 10, the network connection is made via Ethernet, DHCP is disabled - we use static), an exclamation mark appears on the tray icon. At the same time, there is no network at all .... from the word at all ... The only thing that helps is to disable and connect the network adapter in the "Control Panel\All Control Panel Items\Network Connections" .... Maybe there is an option how to fix this?

Answer 1

Perhaps STP on the switch is blocking the port.