Android Samsung Galaxy Nexus continuous reboot, not recognized by PC not listed from adb

Android Samsung Galaxy Nexus continuous reboot, not recognized by PC not
listed from adb

I'm going to be crazy.......
I have a Samsung Galaxy Nexus rooted with cyanogenmod 10.2 ..
The fact is that since some days, when I plug the device to the PC
(windows 7 and Linux Fedora) it isn't recognized. I tried to reinstall
Samsung drivers but nothing. The problem seems in the phone. I've done an
android factory reset and when the device starts, it reboots at the start
up.
I noticed that it happens when I log with a Google account. I thought that
it can be caused by my own google account because it try do download my
backupped apps, so I created a new one, I could install just an app
(whatsapp) then no more, when i start the device it reboots continuously.
The problem is also that I can't change rom, because when I plug it, it is
not listed in the ADB devices.
Please help me!! :-((((
Thanks...