I have an issue where win 7 sp1 hangs when eav 4.2.71 is configured to connnect to erac 18.104.22.168 Then once you perform hard shutdown & restart the system it hangs at logon. The only way to log into the desktop is either by safe mode or disconnecting network cable in normal startup. I updapted all drivers & added a secound network card, the system replicated the behaviour as mentioned above. The system motherboard used was Gygabyte GA-880GM-USB3 so I swapped it out for Gygabite 880GM-UD2H and the problem was resolved. This system build is brand new, I have 2 other systems in the field with the same build doing the exact same thing. So I am left wondering if there is some compatibility issue with this MLB, or is there something else going on here. Any feedback would be appreciated.