I’m using a Fast Ethernet switch or hub to connect my camera to a GigE network adapter, but my camera isn’t discovered. Why not?
Check your network adapter settings.
Go to Start>Control Panel>Network Connections and right click on your network adapter. Select Properties from the drop down menu. When the properties window opens, click the Configure button.
Look for a tab with a name such as Connection speed. If you see a tab like this, select the tab and set the "Speed & Duplex" property to "Automatic identification" or "Auto"
If you do not see a "Connection Speed" tab, select the "Advanced" tab and look for the "Speed & Duplex" property. Set the "Speed & Duplex" property to "Automatic identification" or "Auto".