Stock Nexus 7 stock in boot loop (soft bricked) Help!!

I update my Nexus 7 (2013) to Android 5.1 lollipop and it never was able to reboot back to its normal state. It hangs at the google screen for hours. I can enter fast boot mode and I hot recovery, start, or restart boot loader same thing hangs up on google logo. I cant find A way out of this. I check all over the internet and download so many software's basically all of them are require either me to have USB debugging active or an unlocked boot loader which I have neither as the device is completely stock. Please someone help me find a way out of this mess.

Other info:

Response to USB and computer recognizes it in fastboot mode.
Variant - flc 32G
Version - rev_e
Bootloader version - FLO-04.05
Serial number - 059b5e34
Signing - Yes
Secure Boot - Enabled
Lock state- Locked

USB debugging not active
Device is stock and has never been unlocked or rooted.