D802 - Stucks on LG Logo -No Recover, No fastboot and No Downlaod Mode topic

Hey guys,
I have a LGD802 32GB it stucks on LG Logo and a green/blue LED is blinking. I can't get into Recovery or Download Mode, nor fastboot is working. Only thing what I can do is to push all buttons and get into the IMEI menue. Don't think this can help me anyway.

A few times ago the LGD802 only shows fastboot mode and so i followed the steps discribed in many threads.
fastboot erase recovery
fastboot erase laf
fastboot erase boot

fastboot flash recovery recovery.img
fastboot flash laf laf.img
fastboot flash boot boot.img

fastboot reboot

after that it only stucks on LG Logo.

I also tried the flashTool 2014 method, but phone will ne be correctly recognized by the OS. False Driver?

The Flashtool stops at 4%

Anyone can help me?