alaa2k,   Try using these Recommended Wireless Router Settings I use channel 11. I would make a new SSID to make connecting easier.     Rick
hello my laptop is inspiron 3521 i have wireless problem every 20~30minutes shows me limted accsess and i have lastest drivers and no have antiviurs i tried so many things but same problem is there any way to fix it i was have another laptop same model and same problem i changed it with new one same model and still same problem  i don't have this problem in another laptops in my home and work and parks please say to me what should i do thanks 
Wireless problem