I have a D-Link DFE-520TX Ethernet PCI Adapter in one of the PCI slots, and connected to a modem.
I wanted to install a new sound card so I shifted the Ethernet card to an adjacent PCI slot.(without uninstalling the Ethernet card)
After installing the sound card, I found that I'm not able to connect to the internet!!
These are the observations I made:
The tray connection icon says 'Limited or no connectivity'
When I click on the connection icon, the bytes sent/received status shows something like this...
Bytes sent: 4536 Receieved : 0
The IP seems to be assigned by AutoIP.
I tried uninstalling the Ethernet Adapter drivers and installing them again for the new PCI slot but no luck

Finally I gave up and restored the Ethernet adapter to its old PCI slot....and surprise, its not working there too!!
Did I miss out on something?
Any help in this regard would be really appreciated. Thanks in advance.