Update: two months ago I bought a power regulator / UPS because of occasional brown-outs on this side of the house. naturally, I plugged the router into it, and since then, there have been no...

IanC wrote I gather that both the Optiplex & the 82579LM are coming to the end of the support life time, Do you have similar issues with your system? i don't think the problem is with my lan card,...

IanC wrote Do you have similar issues with your system? @IanC once my machine has established a connection, it works perfectly; the dropped packets are a sign of, well, not having a connection.

Brief update: I have discovered that rather than restarting my computer, I can disable and re-enable the ethernet card. This has the same effect, and eventually tricks the router into allowing a...

I used device manager, which said my lan driver was up to date. I went to the Realtek website and downloaded the latest driver, which updated the lan driver to the latest version, but the problem is...

I was thinking that this may be the result of a Denial Of Service (DOS) attack. kind of odd that someone might be DDOSing just us, and only some of the time.