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Old 05-20-2019, 08:24 AM   #1
Fabbrone
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Default Help HP Z440 workstation

Good morning, the pc only turns on the front led and the fans but not from acoustic signals or other. I have already tried to change the video card to the RAM and the CPU but nothing. Could it be the bios?
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Old 05-20-2019, 02:11 PM   #2
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Default Re: Help HP Z440 workstation

I assume it worked before?

Have you tried a known good power supply?
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Old 05-21-2019, 01:37 AM   #3
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Default Re: Help HP Z440 workstation

yes I have already tried another power supply but nothing
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Old 05-21-2019, 04:08 AM   #4
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Default Re: Help HP Z440 workstation

Check BIOS battery is not low, if it is, replace the battery and reset BIOS settings with hardware button or jumper?
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Old 05-21-2019, 09:50 AM   #5
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Default Re: Help HP Z440 workstation

The battery is ok
what do you mean to reset the BIOS settings with the hardware button or the jumper?
I moved the jumper for the reset but nothing
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Old 05-23-2019, 03:34 AM   #6
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Default Re: Help HP Z440 workstation

someone has available source of bios ?
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Old 05-23-2019, 05:11 AM   #7
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Default Re: Help HP Z440 workstation

Yes, that's what I mean. Move the BIOS reset jumper. Make sure you move it back afterwards.

Can you get the BIOS from HP? Typically they don't go bad by themselves though...
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Old 05-23-2019, 06:57 AM   #8
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Default Re: Help HP Z440 workstation

There`s only a bios update on hp .What is the serial number,to get to the correct support page, and can you post your bios backup .
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Old 05-23-2019, 08:44 AM   #9
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Default Re: Help HP Z440 workstation

is this the first time I disassembled this machine, to remove the main one you also need to remove the screws under the heat sink?
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Old 05-23-2019, 09:10 AM   #10
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Default Re: Help HP Z440 workstation

Service manual http://h10032.www1.hp.com/ctg/Manual/c04823811 .Did you try a bios recovery disk.
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Old 05-23-2019, 09:25 AM   #11
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Default Re: Help HP Z440 workstation

Ok removed, here is the original source
Attached Files
File Type: rar old.rar (6.22 MB, 1 views)
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Old 05-23-2019, 09:26 AM   #12
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Default Re: Help HP Z440 workstation

no I have not tried with recovery disk
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Old 05-23-2019, 10:27 AM   #13
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Default Re: Help HP Z440 workstation

Two different bios to try,the bios backup had errors decompiling with Flash Image Toolkit, meaning the ME was corrupt.
Attached Files
File Type: zip Z440 ME_CLEAN.zip (6.72 MB, 1 views)
File Type: zip Z440 2.47 Rev.A ME_CLEAN.BIN.zip (7.51 MB, 1 views)
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Old 05-24-2019, 05:06 PM   #14
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Default Re: Help HP Z440 workstation

The 2 bios posted above aren`t working. Here`s 2 new ones to try.
Attached Files
File Type: zip Z440 PRD_EXT_ME.zip (6.72 MB, 2 views)
File Type: zip Z440 PRD_EXT_ME M60_0247.zip (7.42 MB, 0 views)
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Old 05-25-2019, 09:11 AM   #15
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Default Re: Help HP Z440 workstation

even with this version fans and LEDs light up but nothing is displayed
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