Cannot connect to router

Hi! I have MikroTik hap ax3 and i cannot connect to the router. Once I bought it I’ve connected via WiFi and probably changed default DHCP settings (I don’t really remember for sure) for something like 192.168.78.0/24. Once I checked that my Internet is connected and working fine - I’ve turned router off for about a week.
After that I plugged in the power cable and now WiFi doesn’t start and if I try to connect via ethernet cable - I get “unknown network”.
Ethernet in my laptop is set to aquire address automatically and my IP in this case is something like 100.65.9.44 with a mask 255.255.240.0.
If I set it manually to 192.168.78.10 with a 255.255.255.0 mask and host 192.168.78.1 - i cannot connect too.

I’ve tried to reset my router to factory defaults by pressing reset, plugging in the power and waiting till green LED starts flashing and then letting go the button - but it didn’t help.

Is there a way to recover my router?

You are (probably) attempting to connect to the router using your browser to access the http interface (webfig).
If for any reason there is an issue with the IP addresses you are using (on your computer, on the router or both) it won’t work.

You should try using Winbox.
https://mikrotik.com/download

Winbox can detect and connect to a Mikrotik router both via its IP address and via its MAC address (unless you have disabled the service on the router).

Even if you have “wrong” IP address(es) or network mask, the MAC should always work.

It works on Windows or - on Linux - via Wine.

You need to connect the ethernet cable to one of the LAN ports (usually they are part of a bridge) NOT on ether1 which is usually WAN (or “internet”) as the default configuration blocks access from the WAN ports.

Thanks! I Was able to connect to router via Winbox neighbours and fix the issue.