Hard brick on LG G2 ? topic

Hi all, i have biiiiig problem with my phone, i trying to install a TWRP recovery with the app, but when the app trying to install the recovery, the phone have boot ... And now, i can do nothinig ... I don't have Recovery, i don't have Download mode, and if i try to boot him, he just blacklight...

But when i connect him on the PC, the PC found TEN hard disk !!! Have you an idea for me ? Please ...

A little french want help ...