Weird DI-624 behavior

Hello,

I have a DLink DI-624, rev D1, and lately, it seems to be acting up. Sometimes when I boot my computer (and the router; I never leave anything on overnight) the 624 doesn't boot properly - meaning all status lights will remain on and I can't access the internet or even the router's internal IP. I go to 192.168.0.1 and I see this screen that's not at all like any in the manual.

Thanks, Andrew