I have a PC and a notebook.  Recently, a friend installed a router to allow internet access on my notebook; it worked fine.  Later I used the utility CD to make sure all drivers, etc. were loaded.  Since then, I cannot access internet on notebook.  PC will access internet fine.  I troubleshooted with router tech. support (Linksys) and it appears my notebook is not recognizing router signal.  Can you tell me what is wrong and how do I correct??