I struggled with this for many hours, and while I could create the bootable Windows PE (v10, v8, & v2.1) USBs, I could never successfully run the Wndmifit64.exe application in that environment. According to the Step-by-Step Guide, the next step is to create a Windows PE USB disk.

You don't need to dissemble as far as I did, just take the. Input the info stated above, forget about the rest. Then I was able to change the values with wndmifit64.exe. It performed the reset in the next reboot. I got it reset with rmpmcnt within Windows and the renamed copied file SMC. So, to access the MPM, you must reset the count. By the way, mine got messed up after trying to recover my machine from the 10.10.3 update screwed up my install, finally now working 100% as before without any losses. I tried recreating whatever circumstances I was doing when the laptop system information got stupidly and annoyingly reset. The wndmifit64.exe application is run from within Windows, but before it can write to the BIOS you must enable the MPM mode (manufacturer programming mode - the red letters when the computer gives the error that count up to 10 eventually). Put contents of the folder wndmifit in a the root of a bootable USB MS-DOS pen drive (Use Rufus) Copy first and then rename FSMC.bin as SMC bin. Gather necessary files by googling nbdmifit-2.03.zip (which are the HP dmi fit tools), from the Chinese site. Gather your laptop info: Serial (below battery), SKU (product number), PCID (remove back panel) and System Board CT (look through the holes in the metal plate, its 14 digits from the left to right on a white label). So, as a last resort and without breaking any copyright laws, I used wndmifit64.exe from HP.

If the laptop were under warranty fine, I would have gone to HP directly, but that was not the case. Building a CustoMac Hackintosh: Buyer's Guide

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