hang when rebooting

This case is strange, when i use [cmd=]whereis freebsd-update.conf[/cmd] through ssh (su) it just hangs. I can't suspend/end it. I ended the ssh and i command reboot directly on the machine, it just hangs and I can't reconnect through ssh. Does this matter have anything to do with the zfs bug on 8.1? Because i haven't patch it :(
 
After running memtest86+ I've found out it's either faulty ram or motherboard, replacing one, will report tommorow..
 
motherboard faulty, I swap in Gigabyte GA-G31M-ES2L and don't forget to disabling all overclocking by default from the motherboard, just set all dram freq and voltage into normal and pcie freq into 100mhz not auto!.
 
Back
Top