Yesterday I stayed at fine because I was not well. I was watching the match between West Indies and Zimbabwe when the screen went into standby, which shouldn't have happened as the video was being viewed full screen. Thinking that Chrome was acting funny, I wanted to go into power options to temporarily turn off display idle standby. When I pressed the Windows button + X to make the system menu show up, it didn't. I thought I had disabled Windows button but I hadn't. The keyboard wasn't responding to any key presses.
I unplugged the keyboard from the USB port and replugged it. That didn't make any difference.
Then I plugged it to a different USB port.. No change again.
I tried it on the Asus T100 tablet and the MacBook Air. Nothing!
However the 6 G-keys seemed to register something, as I heard the faint exclamation sound of Windows but I didn't have the Logitech Gaming Software installed so I couldn't check it they really were sending a signal. So it wasn’t 100% dead. Just dead enough to be useful.
So what could have killed the keyboard?