I've done everything.

I replaced the battery,
I replaced the trackpad, keyboard,
I replaced the MagSafe.

The board is clean, with no liquid residue.

Interestingly, if I remove the battery, the Mac turns on normally. It gets quite hot, but not to the point of shutting down. With the battery back on, it turns on, but after a few seconds, it shuts down. The processor is extremely hot.

Interestingly, the Mac doesn't shut down or restart; it just turns off the screen, but the fan keeps running and the processor cools down.

Hello, I would like to clear this BIOS area.

Thank you.

Clear BIOS 820-00165-a
S/Nc02vn45vj1wl...

Hello, I need help with my MacBook Air 820-00165-a.

The fan runs at low speed, so after a while it turns off because it gets too hot.
If I turn it on without the battery, the MacBook doesn't heat up as much.
Another thing is that the MacBook won't restart. When I restart it, the screen turns off, but the fan stays on.
It only turns off if I hold down the Power button.

Thank you in advance.