How to enable wifi when Function key not working?

I have a Dell Inspiron N5110 laptop running Windows 7 Ultimate, it's fairly old and so doesn't always work properly. In order to try to fix some internet issues I decided to press Fn+F2 as the hotkey to disable wireless communications and then attempted to do the same to turn it back on; after a few tries I was able to get it to register the function and turn off the wireless capability, but I'm now unable to turn it back on. Fn+F2 doesn't do anything, in fact I think my function key is broken altogether as other Fn+F* shortcuts don't work either. Is there a way to turn on wireless capabilities without the shortcut or the Fn key?