Computer freezes every other time before bios. Why?

Question

Iron

Hello. Yesterday I bought myself an HP zbook 15 from my hands.
Yesterday everything was ok, today I come home, turn it on, and it freezes before loading the BIOS, does not react at all.
I reboot and it's the same again. Just at the moment when he writes "Press f10 for Enter bios".
It also does not respond to pressing F10, and if you hold down F10 and turn it on, it will highlight the inscription "Press f10 for Enter bios" in white, as if now nothing will enter.
As a result, in order to load, you need to pull out any one RAM bar, or simply put it in another slot. The main thing is that the location every time you start it is different from the past, and then the computer starts with a bang. but again, only once. As a result, each time you have to move the bar back and forth to the next slot. Did a memory check - no errors. I reset the bios to factory settings, alas, the effect is the same.

Where to dig? how to understand what exactly is the matter? Why doesn't the computer boot up twice from the same RAM location? (It costs 2 pieces of 8 GB each. 2 slots are occupied, 2 are free)
With one bar of frames, the same effect, it needs to be rearranged every time for it to start. No squeaks, does not publish anything. It just hangs there. Although the brightness of the keyboard backlight can be changed.

update:
I pulled the GPS + HSPDA module to hell and everything was fine. It's funny, but oh well, the main thing is that it works now. Apparently he hung the whole system

Answer 1

Try updating bios