MBP 2012: How did I ruin it?

[kristianrt]

I have a Macbook Pro mid-2012 (I upgraded RAM and SSD and it has worked to perfection).

Recently, I couldn't get it to start. I realised it was the power button and keyboard that didn't function. So I changed the keyboard.

Now the power button works, but the keyboard still doesn't. And worse: The computer is running EXTREMELY slow (booting takes 5-10 minutes) and the fan is at full speed all the time.

I don't know how to run diagnostics, reset SMC etc. when the keyboard doesn't function at all. And since the new keyboard doesn't work, I am afraid it is the logic board that's done.

Does anybody have any suggestions as to how I could try to save my beloved MBP?

 

[theMarble]

Try using a wired USB keyboard to reset the NVRAM (hold Command-Option-P-R at boot). Otherwise I would try unplugging and re-plug in the keyboard to see if it's a loose connection.

 

[Audit13]

Is a battery detected in macOS?

 

[kristianrt]

Is a battery detected in macOS?

Interesting question! Now that you ask, I notice that there is no battery indicator in the top bar. I don't know if there's any other way to tell if MacOS has detected a battery? It does however run on battery power right now.

 

[Audit13]

Interesting question! Now that you ask, I notice that there is no battery indicator in the top bar. I don't know if there's any other way to tell if MacOS has detected a battery? It does however run on battery power right now.

If macOS does not detect a battery, check power under system report. If no battery is detected or battery stats are not available, the OS will throttle the CPU at all times.

 

[kristianrt]

Can you tell me how to make the OS detect the battery?

 

[Audit13]

Can you tell me how to make the OS detect the battery?

You can't force the OS to detect a battery as far as I know. It either detects or it doesn't detect.