Wireless Keyboard & Mouse lights not lighting up.

Good morning.

I have a strange problem.

A few months ago, I bought a new [ eBay ] Logitech MK270 Wireless Mouse and Keyboard Combo for my Desktop. Previously they were BOTH wired. I inserted the USB Dongle and swithched the Keyboard and Mouse on. Everything worked perfectly and BOTH the Keyboard and Mouse lights were on.

At the weekend, I tidied up all the cables etc. I turned the Desktop on, and EVERYTHING worked perfectly, except the lights on the Keyboard and Mouse were NOT lit, although they BOTH worked perfectly.

The only thing I changed was to use a different USB Port for the USB Dongle.

I went into the Device Manager and deleted ALL other entries for the Keyboard and Mouse, as shown below, BUT, still the lights do NOT light up.



It is NOT a big problem as I always remember to swith them BOTH off, but I would be interested to find out why this has happened. Surely it can't just be because I changed the USB Dongle Port !

I have already tried a Restart, Shutdows & Restart, and put new batteries in BOTH the Keyboard and Mouse.

As I said, they are BOTH working perfectly except for the lights NOT being lit.

Thanks.

Have you downloaded these programs?
SetPoint.
Logitech Unifying software.
Firmware update tool.
Download - Wireless Combo MK270 – Logitech Support + Download