I have a network with 15 computers on it all hardwired. The same two computers keep dropping an internet connection intermittently. They are all the same exact computers with the same anti-virus/firewall (microsoft security essentials). I had to replace one of the two NIC cards so the two computers that are having the issue have different NIC cards. I did try updating them just in case but that did not resolve the issue. Other computers on the same unmanaged switch are not having any issues.
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