I think you mentioned it is a Bluetooth model?
If yes:

Without anything running (no BIAB, nothing) what happens when you plug in your keyboard to computer with USB cable?
a)Do you hear bling sound of item connected?
b)If not, do you see GREEN light where the plug is, showing that keyboard is charging?

If you do not see that green light, 3 most likely causes:
#1 Your cable is defective
#2 Your computer port is non responsive
#3 Your CME is defective
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Troubleshooting (for Bluetooth CME)
Does your PC USB port, the one you are trying to connect CME works with anything else? Flashdrive or such? If yes->
take your keyboard and plug it to a wall USB charger (using same cable) that has USB ( even external battery pack should work)
If you do not see green light, replace cable. If changing out cable will not give you green light at keyboard when plugged in to external power source, most likely there is an issue with keyboard.
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Having said that. I think you mentioned you have 2 of them? (maybe I am wrong). It is highly unlikely that both will fail at same time. I would focus on cable and USB port.

P.S. Mario,
The Bluetooth version has internal battery. So even if it charged by 3%, it should not have issues with power at laptop.