Do not disconnect the monitor, keyboard, mouse, or power cord. Remove media from internal drives, and remove any recently added internal hardware. However just try the below instructions to confirm the same:Ģ.) Disconnect all connected devices and cables such as Personal Media Drives, USB drives, printers, and faxes. But this "fix" worked for me.As per the troubleshooting that you have done it sounds to be an hardware issue with the keyboard. I suspect that a new keyboard will be needed eventually - nothing lasts forever. Applying some pressure to the area seems to have remade the connections, because these 4 keys came back to life immediately. My theory is that with constant heat expansion and contraction over many years, this mechanism of contacts gets old and eventually under certain circumstances, a section of it goes intermittent.
I am not a techie, but I do know that the keyboard has some sort of matrix circuit that senses what keys are being pressed.
When I did this, I noticed that at that time my MBP was quite warm. I placed the palm of my hand over the ASDF keys and pressed firmly, slowly and gently, hard enough to flex that area of the keyboard. It can't really be software if they work when pressed hard sometimes, and it can't be dirt if all 4 keys go together.ĭon't laugh, but this is what I did. I think it's old age! My 2012 pro is now over 6 years old. then the problem went away for a few weeks, and then came back. I found that the keys would occasionally work if pressed hard. Specifically my fault is the same - the ASDF keys only, but I think others may be affected as well. Here is what I think is a possible solution, having read every other possible solution - dirty keys, accesibility settings, PRAM etc - nothing worked for me.
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