RB711 is answering on web etc.. but i can`t log in

Hello.
I have problem on one roof. Problem is that i cant replace it because heavy snow on roof. After reset main router RB711 stands in half-zombie mode, i cant log in and web is very slow. Wi-fi is down.

Telnet looks like this:
Connected to 10…
Escape character is ‘^]’.
[SSL not available]

MikroTik v5.0rc3
.. and nothing

I tried to log in through web, after some time i was successful (to old adminsitration), i rebooted it but it doesn`t help.

Nmap:
Not shown: 994 closed ports
PORT STATE SERVICE
21/tcp open ftp
22/tcp open ssh
23/tcp open telnet
80/tcp open http
2000/tcp open cisco-sccp
8291/tcp open unknown

On boards is version 5.07. Thx for helps. Jakuub.

netinstall it : D!

did you try Winbox with MAC? This will work if it’s a TCP problem, or if you accidently blocked the Ethernet port with Firewall.