I just got a used Samsung QX411 and installed Windows 7 along with all the drivers through the Samsung website but I cannot connect through Wifi. I've tried through Ethernet and that was working fine and I also checked the device manager to make sure that all the drivers were installed without any issues and none were found, I think the wifi card is a Cenrino Wimax 6150 so I wasn't sure if I should look to order and and try that out. I have multiple devices connected through my Linksys E2500 router with WPA/WPA2 security so I don't think that would be the problem. Could it the wifi card on the laptop? I didn't think the device or drivers would be under the device manager if there was a problem with the hardware. I was hoping to give this as a present for Xmas so any help would be great? Thanks guys!