Strenght: No Signal

Hello,im using a Wireless-N Router with a D-Link AirPlus G adapter,
Since yesterday,Im having a really hard time detecting my Wireless Network
I need to click "View avaible network" several time before finally finding mine(My computer always been from same distance than the router and it was working).
When I finally find mine,I connect,enter key.
It says;
Status: Connected
Signal Strenght:No Signal
For some reason I can have acess to Internet but for a really short time,the connection cut's right after.
Anyone had this problem before?
Would appreciate help
Thanks
-Kyosuki

My first bit of advice is to reset your router. It ought to have a button for that. If not, unplug it and wait 10-15 seconds and then plug it back in. I had a crappy router that I would have to do that to every few days...

If you have a second computer with wi-fi, you could test it with that (verifying that it isn't something on the computer, which is possible)

If you still have the original install disc for the router, go ahead and re-install it... as a last resort this ought to fix it, unless the router itself is shot.

My dad laptop's,which is really near the router is working(althought im not sure if he dosnt connects directly from the Router with a wire).
I re-installed the driver,nothing changed,
Right now as im typing the Internet works but is really not stable and could disconnect any second,then I would have to refresh 1000times my Network list to finally see mine.
Here's the Status;

It says No Signal but the Internet work but really not stable and disconnect every second as I said
I will try reseting/unplugging the Router

Resetting the Router & Modem make's the internet work,the thing is I have to do it every time I open my computer -_-

It's very possible that other wireless networks are interfering with yours (this happens to me unfortunally). What other networks are displayed and which channels are they using? You could buy a more powerfull router or move the existing router closer to your PC (which is what I did). Also make sure there are few metal objects between your PC and the router, metal interfers with your signal too.

One of the most common sources of dropped connections is cordless phones.

There is about 5 other Networks I can detect,dont know how to know what channel they are one,actually,how can I even change my channel?