I just replaced all my keycaps on my keyboard to a different set and after plugging it back in my computer would not recognize it. It worked when it initially came and I changed the keycaps while the keyboard was unplugged. I'm not sure why my keyboard doesn't connect. I tried to follow the wootility restore/reset guide, but keyboard isn't even recognized by my system.
Edit: I should add that I did do the other methods of restarting PC, waiting a few mins, etc. I made sure that the cable/IO port isn't the problem either.