hp z440 memory fan issues

[wolf3d.exe]

Hi,

Is there any way (apart from buying memory fan and modding mobo with cables (http://grandis.nu/images/Z440_Memory...est_bypass.PNG) to disable these annoying memory fan errors during boot ?

Errors are :

"517-Memory configuration requires a Memory fan and this fan is not detected." and "520-Memory configuration requires Memory fan(2) and this fan is not detected."

I can read and modify the BIOS if this can be disabled this way. Just need some help with modifications

Thanks

[JNP-3R]

Re: hp z440 memory fan issues

Interesting. I haven't seen these errors on my Z440 which lacks a memory fan, but I also only have 4 slots populated.

How do you have your memory installed? I know a lot of HPs have an annoying habit of throwing new fans in when you add upgrade parts, but it's possible a different set of parts might offer similar performance without triggering the error.

You may have some luck disassembling the BIOS ROM and looking for the check that determines whether your configuration requires the fan. There may be a way to pass a hardcoded value into that function. The one time I messed with this (only quasi-successfully, I might add) I used Ghidra to disassemble the ROM and locate the interesting sections of code. You should be able to search for the symbol or variable with the error message text and then look to see what function references it.

I'm unfortunately not familiar enough with x86 assembly to guide you further (did I mention I only kinda got the BIOS working last time I tried this?), but it may be easier to make that cable harness, which is what I've always fallen back to.