I see. Well do you know what I should do when the wireless keyboard suddenly doesn't get recognized by the PC??
If it's bluetooth, I would say you have a pairing problem and you need to pair it.
If it's just wireless with a USB plugin, I would say it's probably the same thing, just needs to be paired again, might be a pairing button on the keyboard or USB plugin.
Hope this helps. If not, let the more technical people see if they can give you a better answer.