Hi, I've a strange issue with my Udoo Board Quad. after a few days of power (24/24h) the board disappear form LAN, no serial response and no video output via HDMI, the only way to recover is hard reboot. There is no strange info in syslog and I don't know why the system hangs Could you help me please? I use official ubuntu sysop, WiFi and ethernet connected and configured, external SATA HD with power from the board, official power supply Thanks!!