Orange lights above ethernet connection?

We recently had a big storm and lost internet connection to our house. Whilst internet connection  has since been restored I've noticed that there are now orange lights above the port where the ethernet cable connected to on our notebook. I also cannot get internet connection using the ethernet cable. Does this mean my internal modem has blown?  I can use the wireless modem with no problems.

If the modem has blown, how much are they usually to replace and is it relatively easy? I have a Inspiron 1525 Notebook.

Any help would be appreciated!