Making Your Wireless Keyboard Work Again

If anyone reading this needs pics for better understanding, let me know. This is for Microsoft wireless keyboard.

So, I had been away for a really long time. On return, found my wireless keyboard was no longer working. I use rechargeable batteries and thought the batteries must have drained and put them on charger. Checked back after many hours and it still wasn't working. Tried it again, same behavior. As other wireless devices were working fine, I concluded that these sets of batteries must have gone bad. Bought new batteries (at 5 AM!) but still no luck.

I thought it's my keyboard and was about to go back to purchase a new one when I noticed a "connect" button at the back.

Here's the tricky part. Pressing that connect button won't do anything. Tried that many times in vain. After trying multiple things when I was about to give up, got it back working. This is what should be done in a situation like this

1) There's a connect button on back of keyboard
2) There's a button on the receptor, which I had no clue until now is what for
3) Keep the connect button pressed
4) Press the button on receptor

Your keyboard will start working again. I guess that above starts a discovery routine. It was not intuitive because mouse worked without a complaint. I so wish that keyboard had been like that too as working on the laptop's keyboard was a pain and therefore ended up not doing many things.