There are several laptops and a desktop on our home network. The desktop is connected via ethernet, but all of the laptops and iPods, etc are connected via wifi. One of the laptops has had an issue connecting to the internet ever since it was purchased about a year ago. When there is signal, it will connect to the network just fine like a normal laptop, but as soon as the signal drops below 100% it can no longer access the internet. When I troubleshoot the connection, it says that the DSL modem is having problems connecting to the internet. All of the other computers have no problem though! Help please!