Chosen Solution

I will try to tell all the information I have:I bought system off ebay for display spare parts, once I changed the display and I decided to test the logic board of the system and the following things happened

  1. there is a 45w power supply green led
  2. connecting the battery - it is recognized and recharged
  3. by pressing the start button the system starts and after 2 seconds it turns off and after 2 seconds it turns on again, after that the system is started only that the display does not show anything it is black, I also tried connecting the external display - nothing
  4. I measured the voltage on the components that appear to be in the screen power supply chain on the diagram, they are all at 0v the motherboard is 820-2530 I want to know if the gpu is dead, if it is still repairable in the sense that I would use it without its screen - via DP cable with external monitor so I don’t care that the notebook display doesn’t work Update (12/28/2022) https://drive.google.com/drive/folders/1…

U7200 fault ………