Alienware 13 R3 OLED, less than two months old, WiFi adapter Killer 1435 was working fine, now no longer works, no longer shows up in Device list. Have tried new drivers from Dell and Killer, using System Restore to roll back any possible conflicting software, no luck. Wired 2500 Ethernet adapter still shows up, though. Should be under warranty, but I can get a new WiFi card for less than the cost of shipping this back to Dell, not to mention the loss of time and the added aggravation of dealing with them. Any suggestions?