Toshiba Satellite L555D running Win7/64bit Premium less that three months old Wifi was working fine, but suddenly quit; Using Fn+F8 to toggle wifi off/on, there was an enlarged graphic with the toggle, but it disappeared almost immediately. Holding just FN, the tool bar is now VOID of the WiFi F8 and attempting Fn+F8 does nothing. On this laptop, there is no physical switch. The BIOS is enabled for both wired and wireless devices and the Toshiba Hardware applet is also. Rebooting causes the POST sequence to show the WiFi led for a moment (which looks as if it was found and is active), but no such luck -- The Device Mgr only has the wired RealTek device and 'show hidden devices' doesn't help either. Plowing thru the Registry, I can find RealTek ethernet device (enum = 0007) + the related PCI values and the WiFi 8191se device (enum = 0012) + its related PCI values in ControlSet01, ControlSet02, and CurrentControlSet the \inf directory shows the oem11.inf and oem10.inf which corresponds to the drivers in system32\drivers\ and they're both present If the hardware were good and the drived fouled, I would suspect the DM to show the device. Without the device in the DM, I fear the WiFi adaptor is blown. Your comments?