I have a Dell Latitude E6420. My computer had Windows 7 and I re-imaged it with Windows 7 (because of a procedure for work, something about removing myself from their network.. I was just following the directions I had been given). Since the re-image, I cannot connect to the internet whatsoever. With a cable or wirelessly. My computer recognized the wireless networks I had at my house before the re-image, but there is no longer a wireless adapter even under my "network adapters." Moreover, every single "Other device" has a yellow exclamation point next to it. I cannot connect to any internet at all to remedy the problem and am at a loss for what to do. Any advice would be greatly appreciated. Thank you!