Disconnectivity after power loss/restart


New Member
I have a strange issue with my broadband line.
The line works fine as long as there is no power loss. After any power out to modem/router or restart, the previously established connection is out of order and there is yellow triangle on the wifi icon on the system tray. I resolve this by forgetting the old connection and have to reestablish it by applying the password again.

Can any expert figure this out please?
My modem W150d model with single antenna.