mobile

I updated my phone to Nexus to 5.1 last night and it got stuck in the boot animation but I figured it would be done when I woke up. Much to my dismay that was not the case so I tried to factory reset and now I get this message that says "No OS found." Tried to plug it up to the computer but it won't connect. I think it may have something to do with the OEM Lock but I cant fix that without the phone turning on. Please help!