I have a network card that functions fine with light use, but quits functioning after heavy use. I replaced it with a brand new one and still have the same issue, also updated drivers. It is a wired D-Link card.
The Internet seems fine for a small amount of web browsing but when I run a bandwidth test it starts out fast and slows quickly until the card completely quits; I have a constant ping of the gateway going while I run this and it starts timing-out after a couple seconds into the speed test. The card will stay on and the data light on it still flashes some but I cannot ping the gateway or anything else until the computer is rebooted. After this happens (before doing the reboot), if I try to disable the interface in Network Connections the window freezes up.
Anyone had a similar issue or have any other suggestions/ideas for narrowing down this problem?
Update: I had previously said that this problem did not exist in safe-mode. That must have been a fluke that allowed it to work once because it does not work in safe-mode either.
The computer in question has both a card (PCI, I think) and an integrated NIC, one used for a LAN (the integrated) and one used for accessing the Internet (the card). When I switched the two ethernet cables and swapped their corresponding static IP configurations, everything seemed to work fine.
Is it possible that the combination of the card and either the router or switch that it is hooked up to are having some kind of issue? Why would it [seem to] work fine after switching them? I suppose the only way to find out for sure is to try different hardware but I can't mess with that currently.