hello everyone. a few of the buttons have stopped working on my keyboard. im guessing its related to a liquid spilling incident a few month ago. back then my mac wouldnt turn on but i got it fixed... but now this is happening. i cant afford to take it in to the menders right now so am trying to get an old pc keyboard working but can't. i'm plugging it in via usb (i got a keyboard t usb adapter.) when i plug it in the lights flash but no buttons work and my mac still uses its internal keyboard. any tips?