nexus 7 help please

view story

http://forum.xda-developers.com – my nexus 7 is stuck in bootloader with no recovery ive tried the flash back to stock and unroot option on the wugfresh nexus toolkit 1.5.3 and it works all the way til sending system the little - mark still flashes but i left it for like 20m and it still didnt work ive tried multiple times and i clicked cant boot up option, please help (HowTos)