external keyboard problems

[Rui_3_]

hello! i have a laptop from HP, i use a external usb keyboard, it Works fine til i Plug in the Ac-Adapter. what to do? i just dont undestand why it Works fine when isnt charging.

sorry for bad eng

hope you can help me

 

[DonQuixoteMC]

Your english is fine

When you plug in AC power, does the keyboard work in another USB port?

Have you tried plugging in AC power, then plugging in the keyboard? Or does order not matter?

 

[Rui_3_]

Your english is fine

When you plug in AC power, does the keyboard work in another USB port?

Have you tried plugging in AC power, then plugging in the keyboard? Or does order not matter?

 

[Rui_3_]

Yes i have tried that, and it says unknowm usb devise (device descriptor request failed)

I tryied to update drives but i have the lastest updates already

But it works fine when isnt plugged to ac power, so it couldnt be the device drivers