I have an old Vista 17 inch Gateway P-6822 Laptop. Since upgrading to a new WiFi Modem in the house, the Laptop does not "see" the Wi Fi Signal. It can see other modems from the neighbours. I have no choice but to connect it using an ethernet cable. I have already downloaded the "Latest" wireless Lan driver from the product website dated 2013 but that did not help. I am not sure if its a security issue. Is there any way to fix this problem?