I am a newbie with Kali Linux I messed up my old laptop's wifi network. First of all, I use TOSHIBA Satellite with Intel Wifi Link 5100. In the beginning everything was working perfectly but when I ran airmon-ng and put my wlan0 to monitor mode, I never got it back. I tried rmmod to remove the mode and reboot it but it did not work and I tried mostly everything. The wifi symbol is in the settings and seems operating without finding any networks. After rebooting, it seems like it connects for 15 seconds and it just stays there with no connection. USB wifi adaptors work perfectly fine its just after I used airmon-ng to put wlan0 to monitor mode and recovered from it to back to managed mode it does not work. When I try to use 'ifconfig wlan0 up', I get "SIOCSIFFLAGS: INPUT/OUTPUT ERROR. " In addition to this, this KALI machine is dual booted with Windows and when I switch to Windows it does not connect to wifi and it does not see the wifi card connected to it either. PLEASE HELPP!