I am not sure which subject this comes under but here goes. I got a Del inspiron 7720 that came loaded with windows 8. I replaced the hard drive last year with a solid state and installed windows and then before the free upgrade to windows 10 stopped I put windows 10 on it.
The green led light was working for months to tell me to hit the FN+F3 key to turn off the touch pad.
Yesterday I noticed that no longer works.
Nothing I tried has got the green light back on so I can use this function .
No errors in device manager.
I ran the hardware thing when booting by hitting the f12 key but it said no problems found.
Any idea on why this green led light went off ? and I am no longer able to turn the touch pad off and on. I would like to just disable it as I never use it but I see no way in system BIOS to do that. Any tip appreciated. Tom