No power
i have the above ps which i change the TOP258eg ic.
Now i have power but is clicking and voltages are flutuating. I change all capacitors, i test all mosfets and all are ok.
i am wondering what is the value of R901! I am getting 0.5Ohms. Is that correct!
the colours look like R,R,W or silver,G Bl.

Thanks...

This specification for the HP Z840 Workstation can be useful for upgrading or repairing a desktop PC that is not working. As a community we are working through our specifications to add valuable data like the Z840 Workstation boardview and Z840 Workstation schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from our users directly on the relevant badcaps forum. Please note that we offer no warranties that any specification, datasheet, or download for...

This specification for the HP Z840 Workstation can be useful for upgrading or repairing a desktop PC that is not working. As a community we are working through our specifications to add valuable data like the Z840 Workstation boardview and Z840 Workstation schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from our users directly on the relevant badcaps forum. Please note that we offer no warranties that any specification, datasheet, or download for...

This specification for the HP Z840 can be useful for upgrading or repairing a desktop PC that is not working. As a community we are working through our specifications to add valuable data like the Z840 boardview and Z840 schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from our users directly on the relevant badcaps forum. Please note that we offer no warranties that any specification, datasheet, or download for HP Z840 is accurate, safe, error...

This specification for the HP Z840 Workstation can be useful for upgrading or repairing a desktop PC that is not working. As a community we are working through our specifications to add valuable data like the Z840 Workstation boardview and Z840 Workstation schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from our users directly on the relevant badcaps forum. Please note that we offer no warranties that any specification, datasheet, or download for...

This specification for the HP Z840 can be useful for upgrading or repairing a desktop PC that is not working. As a community we are working through our specifications to add valuable data like the Z840 boardview and Z840 schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from our users directly on the relevant badcaps forum. Please note that we offer no warranties that any specification, datasheet, or download for HP Z840 is accurate, safe, error...

This specification for the HP Z840 can be useful for upgrading or repairing a desktop PC that is not working. As a community we are working through our specifications to add valuable data like the Z840 boardview and Z840 schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from our users directly on the relevant badcaps forum. Please note that we offer no warranties that any specification, datasheet, or download for HP Z840 is accurate, safe, error...

This specification for the HP Z840 Workstation can be useful for upgrading or repairing a desktop PC that is not working. As a community we are working through our specifications to add valuable data like the Z840 Workstation boardview and Z840 Workstation schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from our users directly on the relevant badcaps forum. Please note that we offer no warranties that any specification, datasheet, or download for...

This specification for the HP Z840 can be useful for upgrading or repairing a desktop PC that is not working. As a community we are working through our specifications to add valuable data like the Z840 boardview and Z840 schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from our users directly on the relevant badcaps forum. Please note that we offer no warranties that any specification, datasheet, or download for HP Z840 is accurate, safe, error...

Anyone have bios 2.40 for HP z440/z840 workstation?

Afaik hp doesn't provide older bios like this, anyone have bios 2.40 after all these years? Thanks in advance

Re: New Members - please post your introductions here

new here, trying to find older bios for hp z440, z840 workstations

Re: Need HP Z840 Clean BIOS Bin



Here's you New BIOS, try it and give me results.

Serial Number: 2UA6512KV1....

Need HP Z840 Clean BIOS Bin

Hello Please i need BIOS Bin For HP Workstation Z840
Or if can somebody clean me for my bios...

Re: Z840 bios dump request

Is it a HP Z840 Workstation ? ,post the serial number

Hi,

I need to unlock the HP z840 Manufacturing Mode to restore the TPM functionality of the motherboard.

Is that possible?

I have posted a thread on HP Support forum without success.

[url]https://h30434.www3.hp.com/t5/Business-PCs-Workstations-and-Point-of-Sale-Systems/HP-z840-no-TPM-BIOS-options/td-p/8103194[/url]

Thank you.https://Hi,<br /> <br /> I need to... on HP Support

Re: Unlock HP z840 Manufacturing Mode

hi,

I tried the UefiMpmUnlock.efi but i got "HP MPM protocol is not present."

so what else I can do?

Thank you.

Re: Unlock HP z840 Manufacturing Mode

Hi,

I read this document:

Instructions on CREATING the MPM-Unlocking SMC.BIN USB Drive

[url]https://manualzz.com/doc/44691860/instructions-on-creating-the-mpm-unlocking-smc.bin-usb[/url]

I tried using HP NBDmiFit tool

[url]https://www.finalfixer.com/2020/02/hp-dmi-tool-nbdmifit-wndmifit-all.html[/url]

But the included FSMC.bin that you rename as SMC.bin is not working on the z840.

At least I followed the procedure described in the above pdf...

Re: Unlock HP z840 Manufacturing Mode

Hi,

this tool is the HP BIOS Configuration Utility (BCU)

latest version can be downloaded here:

[url]http://ftp.ext.hp.com//pub/caps-softpaq/cmit/HP_BCU.html[/url]

It gives me error when trying to unlock the MPM:

<SETTING changeStatus="fail" name="Manufacturing Programming Mode" reason="SetBIOSSetting: Access Denied" returnCode="6">
<OLDVALUE><![CDATA[Lock]]></OLDVALUE>
<NEWVALUE><![CDATA[Unlock]]></NEWVALUE>...

Re: Unlock HP z840 Manufacturing Mode



try this..

[url]https://www.youtube.com/watch?v=9T57ktw8n3Y[/url]Re: Unlock HP z840 Manufacturing Mod...7ktw8n3Y[/url]...