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- HP Community
- Notebooks
- Notebook Boot and Lockup
- Probook 450 G2 - Boot problem

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02-03-2023 08:10 AM
First of all, I am Dutch, 75+ and my English is not 100%.
I have got a Probook 450 G2 with the following boot problem:
When startup the laptop with the power button, then 20 seconds only a black screen with a lightning power led.
Then 4 seconds a max blowing fan with still a black screen.
Then 4 seconds power off.
Then a automatic power on with black screen and after 20 secinds the 4 seconds with max blow of vhe fan and then the 4 seconds with power off.
This is repeating.
Sometimes in the 4 seconds with the max blowing of the fan I see a blinking led in the Caps Lock:
some 3x, sometimes 2x, sometimes no blinking.
I have tried all the solutions I have found, even replacing the 3V battery cell.
Also replacing the cooling pasta of the cpu.
And I was supprised not seeing a cpu socket, but a PCB with 2 chips, nameless, so I could not found the name Intel or ADM.
I have tested the memory with Memtest86 in another laptop, is OK.
My conclusion is: a seperate CPU and GPU being "dead" ??