|Could be faulty, yes.|
Are you sure, that the wireless is disconnecting or could it be, that the internet connection is dropping?
You can check this in the routers log.
You can also try to ping the router, when connection is lost, to make sure, that we are dealing with the right problem.
Therefore, click Start / Run and type in cmd and click ok.
At the command prompt, type in:
If you get 4 replies, you didn't lose the wireless connection, but maybe the internet connection, which is a different problem.