[SOLVED] Help Upgrade Mageia 4 to 5 failed

Hi
I was upgrading a laptop Dell Inspiron 1545 which had Mageia 4 (and Mageia 3 before). It worked fine until it told me to reboot.
However, rebooting gets stuck at
"Started System Logging Service."
If I boot into safe mode, even if I plugin Ethernet cable, I have no network.
The machine is useless at this moment.
Also, the only failed message is about mounting the NAS volume.
I was upgrading a laptop Dell Inspiron 1545 which had Mageia 4 (and Mageia 3 before). It worked fine until it told me to reboot.
However, rebooting gets stuck at
"Started System Logging Service."
If I boot into safe mode, even if I plugin Ethernet cable, I have no network.
The machine is useless at this moment.
Also, the only failed message is about mounting the NAS volume.