Windows 7 - Laptop droppin WiFi address

hey all, i have a small issue with my Dell 1520 laptop and my netgear router, it seem that the laptop is either droppin or not findin 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 cannont 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 intergrated controller. ( i am thinkin 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.

thanks in advance

Hey.

On the router, set the lease time to its maximum setting in DHCP.

Reboot pc and router after.

just went through all the setting on my router, i did not see where lease setting were, did i miss it some how ?
thanks