I'll be 100% honest with you, the first thing I did with both my N5 and N7 was unlock the bootloader. But, can you use fastboot to flash a stock factory image zip (link in my signature)?
If not, will it allow fastboot erase cache?
What version of TWRP are you using, and why is your bootloader locked with TWRP installed? Did you relock it?
I can kind of flash the stock image back. I don't think it really works though. I checked the driver under device manager. It says it is for a nexus 4.. I downloaded and installed the google driver from their site. Is there a different one I should be using?
I did relock the bootloader. I thought I had flashed back the google stock image just fine, but apparantly not. What happened was randomly yesterday the tablet was stuck at the google boot screen. I went in to recovery and it said there was no OS installed. So I figured the best thing to do was the return it to stock. It is weird because it just hangs at certain commands. Like fastboot oem unlock or fastboot format etc.... Could it be a driver thing? The tablet responds to other commands though. :/