Well there is one thing you can try:

open cmd.exe as admin
cd to where flasher is located
flasher -f -F rootfs.bin
Plug in the phone once it says phoenet not detected

your phone will get detected and it will show your battery is dead and will charge till 11% for a flash to be performed...Just plug it out at 9-10% and plug into a wall socket for it to charge...

The first 9-10% can take nearly an hour so don't panic...


Edit: The more I read your post the more i'm sure the above should work...IIRC mariusmssj had a similar issue fixed the same way...Sometimes the usb that you left it plugged into does not help with the charging and in fact speeds up the draining of the battery so your battery has ran out of reserve power hence the kernel is not being "kick-started" even with a wall-socket...flasher is the only way to get it "kick-started"