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Network connection stuck at 100Mbps (Gigabit card installed)...
Hi all,
I cannot work out what could be causing a network card to only connect at 100mbps (full duplex).
The setup of the office is as follows:
WAN -> Router = 100Mbps Fibre
Router -> Switch = 1000Mbps port
Switch -> Patch Panel = Cat5e Cable (Switch port configured to Auto)
Patch Panel -> Floor Port = Cat5e Cable
Floor Port -> PC = Cat5e Cable but PC will only register 100Mbps
I have tried to set the PC to 1000Mbps Full Duplex through the NIC Properties page.
I have tried forcing the Switch to broadcast at 1000Mbps on the relevant port.
Either of the above just show no network connection when set to 1000Mbps.
I have tried changing the network cables.
I have disabled and re-enabled the NIC from the BIOS.
I have uninstalled the NIC driver from windows (inc. deleting the files) and then allowing windows to install the driver fresh, followed by a windows update for a newer driver version.
Despite all the above, the PC will not connect at 1000Mbps.
The PC is a Lenovo M90z, Win 7 Pro x64, 4GB RAM.
NIC Card: Intel 82578DM Gigabit Network Connection.
Any ideas on what to do?