Elitebook 840 g2 turning on no display

estabilito

Senior Member

Join Date: Aug 2020

Posts: 54

Country: poland
#1

Elitebook 840 g2 turning on no display

11-03-2021, 04:41 AM

I have 6050a2637901-mb-a02 with all present voltages except cpu voltage.
Fan on full speed after startup, no display ofc. This is orginal bios, any ideas?
already tried lot of bios from this forum, even clear bios from hp - same result.
Cpu converter replaced, same result.
Resistance on CPU coil around 60-75 ohms i5-5200u.
Other resistances on coils looks ok.
ec reprogrammed and replaced ec winbond - same result.
Attached Files

orgbrako.rar (6.24 MB, 43 views)
Tags: None
ACS-Repair

Badcaps Veteran

Join Date: Feb 2021

Posts: 203

Country: Canada
#2

11-19-2021, 03:22 PM

Re: Elitebook 840 g2 turning on no display

Sometimes this can be solved by simply removing the CMOS battery (if it has one) for a couple of minutes, then putting it back in. Have you tried that?
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mayss

Member

Join Date: Nov 2016

Posts: 30

Country: Polska
#3

11-19-2021, 07:05 PM

Re: Elitebook 840 g2 turning on no display

Program the bios once again with your bios cleaned which I turned on.
Attached Files

orgbrako_clean_me.rar (5.97 MB, 99 views)
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Elitebook 840 g2 turning on no display

Elitebook 840 g2 turning on no display

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