Wi-Fi totally gone from Laptop

I have a Toshiba Satellite C850 19Q with Windows 10x64 Home, today I noticed that my laptop does no more have option to connect to wifi, however before everything was fine, now i can only use ethernet, i tried all solutions i found - reseting with command line, reseting from settings and updated drivers, nothing helped me, and I also need to say that I cannot enter bios, because the boot screen does not tell me how to. please help!

Edit I have installed new wifi card and it still doesnt work

Solution 1:

Laptops of this type have a hardware wifi on/off switch. It will be activated by holding down the function key (bottom left) and pressing one of the top line of keys on the keyboard. Look for one that may resemble an aerial or wifi related then whilst holding down function press that key. Your wifi should re-enable.

Solution 2:

On my Toshiba you have to press "FN" (Blue color) simultaneously with "F8" (that has a wireless network signal also in blue color).