weird wireless problem

[popeye18]

Ok so i have wireless on my labtop and the modem is in my roomates room. I have never had a problem with my connection before in my room or anywhere else in the apartment. Today though for no reason i couldnt connect in my room. When i took my labtop into the living room it started working. It will not connect in my room but it will in other places in my apartment. Does anyone know what could be causing this?