I am having same problem. Out of the box, hooked up directly to computer and only lights up bottom LED. Will not recognize 192.168.88.1 nor ping.
Also tried this post:
http://forum.mikrotik.com/t/boat-setup-for-groovea-52hpn-and-rb-951ui-2hnd/83681/1
Do these things get returned to distributors with config messed up and and they resell them?