[Q] LG optimus Hub stuck on LG logo

PLZZ GUY HELP ME I'M in BIG TROUBLE!!!!!!!!!!!!!!!!!!!

I try to backup my stock ROM using clockworkmod Recovery through my optimus hub. when reboot my phone entered into "fastboot mode started udc start() " .
then I try to install cwm recovery partition using fastboot.exe.
but now I got stuck at LG logo screen and nothing is working.
what should I do now??????

ANY IDEA?????
PLZZZ HELP ASAP....