Dell 1520 Dropping WiFi Address

i have a small issue with my Dell 1520 laptop and my netgear router, it seem that the laptop is either dropping or not finding my network, i can set the mac address an ip address in my router, and the laptop will find the address and will work, use it for few day without an issue, then when i turn it off and turn it on the next day it cannot find the network again. even when i right click on my network and tell it to connect it will not connect.

there are 2 wireless adapters on the laptop one is a intel pro wireless adapter 3945, and a broadcom 440x integrated controller. ( i am thinking there is conflict ) i can connect with no problem with a cable to the latop, both the intell and broadcom's addresses are in the router.