OPT will only boot into recovery?

I just recieved my OPT in the mail today. I took it out of the box booted it up got up to the "insert sim card" screen and powered it off to charge. Used the supplied charger and cable plugged it in while phone was off, battery showed it was charging including little red led.

Came back to check a little while later, led was green, pressed the power button once to see the battery was fully charged, unplugged the phone.

Held the power button down, one plus logo boot screen comes on, then goes directly to recovery menu. Ive tried wiping cache, data, and format all data, i reboot and boots back into recovery.

Im thinking ill just fastboot the stock rom back on but very weird to have the happen to a brand new phone...

Any ideas?

Thanks!