I have a Toshiba L655D, Satellite.. I cant get the wireless receiver to turn on. The FN+F8 button is the on/off switch, no other switch on the outside of this PC. May have deleted a program for that , but not sure.. The realtek LAN 802.11, is working properly... All troubleshooting test results say to turn on wireless capabilities.. I can connect thru Ethernet cable... all the other F buttons are working. What's the problem?