This might be an duplicate, because my first topic doesn't show...
Hello, so I bought the RB951G-2HND in september and it was my first one, before I had an TP-Link running DD-WRT which freezes after some days and the default firmware was even worse.
Everything perfect, f* fast router and features that I loved, acting as an advanced home router, until I rebooted it (6.40.4) by the Winbox (3.11) menu after an upgrade from (6.35~), and it simply boot-froze, so I did an Netinstall as of below method (for any newcomer) and reconfigured without restoring backup. Restarted again and everything ok, fast, rules and QoS seems optimized.
After that, the energy went down one time and it booted perfectly.
Other day (1 week later), the energy went crazy (light pole fuse broke) and got from 127 volts to 80 volts for 1 hour 2a.m. (I measured it before, high probability), it maintained working without reboots.
Rebooted it the next day, as I tought the eletricity went out other than being at lower voltage. Nothing in the logs that warns. Rebooted perfectly.
So after 7 days without any problems, I decided to reboot to refresh all the data and memory and caches, and them it did again, boot-froze and had to do another netinstall.
Boot-froze: it beeps one time, (doesn't twice-beep an second time, meaning it didn't boot properly).
So I did the netinstall again and now I restored my last backup, because I would hate to config. everything again (DDoS deny rules, tarpit, etc), and it restored with issues: it rebooted with some slowdowns in the Winbox, I selected supout tool and started it and it freeze and logout me, so I decided to reboot again after the supout bug and restore-and-automatic-reboot, and it stopped accepting Winbox login, so I had to turn off by removing eletricity and putting again, it rebooted and worked, logins ok, everything from the backup ok and restored, supout file 300kB. So them I decided to make another supout as the first try could bugged with the force reboot, started, got 100%, file size (504kB). From before, I could not get ANY data other than the backup, not even any supout.
Follows the supouts, to bugfix, if possible:
https://drive.google.com/open?id=0BxFQ1 ... 3RZZ3hhaXM
For fresh format, using netinstall:
Server IP 192.168.88.3 and MAC 255.255.255.0 and Gateway 192.168.88.1
Netinstall Boot Server Client to 192.168.88.1
Press RESET while booting the MikroTik, until beeps or shows in netinstall or light change state.