Laptop stuck in boot loop after windows installation

[CarMagician]

Hello,

I have a big problem with my Probook. 

I did a install of a second windows 10 on a different partition.

This went all good so far. I shut my laptop down. We fast forward to the next day.

I start my Probook and it does not recognize my fingerprint. Never had that before. 

Okay entered my password. -> instant reboot. 

Okay I thought look at the start entries in bios. 

Power On, Press F10 for startup menu. I get the message of entering the setup. 

I have to put my password in, after that HP Logo with message in the corner about entering setup. 

Instead of setup I get a reboot. Every time. Can't even get anything done with a live usb stick. 

Tried every possibility, Pressing ESC, F1, F2, F8, F9, F10.

Every time I have to scan my finger which does not work, so I enter my password. -> HP logo -> reboot. 

Tried a hard reset by unscrewing the back cover and unplug the battery. 

Any ideas?

Regards

CarMagician

[CarMagician]

Even tried to unplug and replug the Bios Battery. 

No change in behavior what so ever. 

[iomare]

Hi,

If you remove the disk and boot it without Drive, what happens?

Let us know,

David

[CarMagician]

Unfortunately there is no change. 
I have one M2 and one SSD. 
First I tried was 1 1. so both attached 

1 0

0 0

0 1 

No change, still boot loop on startup. 

Can’t access start setup or setup screen. 
Looks like board damage to me?

[CarMagician]

Anyone? 

[CarMagician]

Only change i was able to get is a POST error as I disconnected the internal backup battery for two days. 

This thing is only 2,5 years old. Very disappointing. Next Laptop won't be HP.