I'm having a problem with one of my computers where it will randomly disconnect and reconnect from the network/internet. It has been used on various networks at seperate times. Originally a problem which resulted in it losing it's DNS and unable to regain it without restarting which was solved by disabling IPv6, since then this problem has occured. The network ports are built onto the motherboard (ASUS P5W DH Deluxe), and as far as I can tell both do the same thing. The machine uses Windows Vista.
The only thoughts I can come up with now is to replace the motherboard, which I'd rather not do if possible. Does anyone else have any ideas on this? If anyone needs any more information feel free to ask.