[narinesa]

I do not know what happened but my dd-wrt router is no longer working. It only shown dd-wrt but no internet and I can not longer access it.

My network used to Linksysv but the adapter is no longer there.

I do not know if a recent intel update has any affect.

I am a layman. Not a computer expert

[Monza]

My troubleshoot starting point is to reboot both the router and the modem.

If still no joy try to confirm the modem is up and running correctly so you can focus on the router as the suspect for the connection loss.

[narinesa]

Very unusual for the router to loose all dd-wrt configuration. WHY

I did a backup bin file restore and everything is ok

[bushant]

No idea your build but consider Administration>Management>Bootfail Handling.