Pinebook Pro malfunctioned hardware

[samtux]

OK, you have a recent enough uboot to display to screen
If you have a backup SD (& some different distro), I would try booting from that,,
with the emmc switch flipped to disable so that the uboot on emmc is not loaded
that the pci controller (nvme) is also failed, maybe it is indeed defective

Hi,
Thanks for your reply.

Now I've tested booting Kali Linux and when the XServer started and showd the login screen the noise came through the loudspeakers for a couple of seconds. I didn't log in the OS (I tried but the keyboard keeps avoiding its job) but pressed the power button and then the noise again came through the loudspeakers. So I opened the case again and disconected the display cable. Now when I power it on, there's no noise and according to the leds the systse came through the loudspeakers for a few seconds. I didn't log, since the keyboard is not working, but pressed the power button and then the noise again came through the loudspeakers. So I opened the case again and disconected the display cable. Now when I power it on, there's no noise and according to the leds the system without noise.

So what is broken?  The Display or the GPU? Holding my ear on the mainboard, the noise seems to come from the center of the board, so either from the SOC IC itself or something nearby it.