Originally Posted by newellj79
Try the factory reset option in recovery. Had the same problem and that got me squared away.
Sent from my Nexus 10 using Tapatalk 2
Found these instructions which solved the problem (thanks to WugFresh)
If you were to bootloop after an unlock, the procedure would just be to factory reset. Once you unlock, the only way to relock is to run the fastboot oem lock command explicitly or use the toolkits OEM lock button. A factory reset only wipes user data and cache and resets system settings to default.
If you were to bootloop after an unlock, you would first power down; hold the power button until your device turned off. Then you would turn it back on while holding both volume buttons at the same time (so the power button and both the up and down volume buttons)... this will bring you into bootloader mode, where you will see a big green START. Use the volume buttons a few times to turn that big green START to the red RECOVERY. Select recovery by using the power button once, then you will see an android on its back with an exclamation mark.
Once you see that screen (which is the pre-screen to stock recovery), just short press all three buttons (both volume buttons and the power button) at the same time to bring up the stock recovery menu. There you will see an option to factory reset, which you can highlight with the volume button, and select with the power button.
2. Power down
3. Boot back up with all three buttons
4. Select "Recovery"
5. Short press all three buttons to see the stock recovery menu
6. Perform a factory reset
Then just let it boot back up