• HP Probook 640 G1 no display

It is currently 30 June 2025, 02:48

HP Probook 640 G1 no display

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  1. Topic title should contain: the device's manufacturer, full model and the brief description of problem.
  2. Topic message should contain: the PCB marking code (required in case of hardware repairs), an extended description of problem, things you have checked/replaced/measured, your conclusions and the question. If you are not able to find the PCB marking code, please read THIS TOPIC. If you still cannot locate the PCB markings, please upload a clean, both-side photos of the mainboard - it is required to remove any films, modules or brackets possibly covering these markings.
  3. Before posting a new topic please read all topics in TRAININGS subforum and make a preliminary diagnostic based on the content of those trainings.
  4. Uploading of any complete schematics, BIOS / firmware files or any other kind of documentation, or linking to 3rd party websites with such files, is STRICTLY PROHIBITED. You can only upload the small portion of documentation or, link to BIOS file on UNVERIFIED BIOS FILES subforum, which simplifies the diagnostics/repair. You are not allowed to upload more then one complete page of instruction/schematic per single topic. The file you upload must not contain any watermarks, "confidential" markings, links or email addresses and cannot be password-protected.
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#1 HP Probook 640 G1 no display

by cygron • 28 October 2023, 16:01
Model: HP Probook 640 G1
Board id: 6050A2566402 MB A03

Laptop come with damage RAM. I replace good one. For now, when connecting adapter or power supply, Laptop automatically running (Without CMOS Battery) but no display. All coils have voltages. Power comsumption on DC supply is about 1.2 amp or 0.939 amp. With CMOS battery, laptop can't turn on. BIOS flashing can't solve the problem. Need help.

Re: HP Probook 640 G1 no display

by Google Adsense [BOT] • 28 October 2023, 16:01

#2 Re: HP Probook 640 G1 no display

by hhs • 6 December 2023, 14:11
W celu diagnostyki podgrzej rdzeń GPU.

Re: HP Probook 640 G1 no display

by Google Adsense [BOT] • 6 December 2023, 14:11
 This topic is marked as ARCHIVAL. Please only reply if your message contains the solution (Terms and Conditions p. 12.1).
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