I fixed it. I think what happened was I installed Windows 11 with Secure Boot disabled. That's why Intel ME did not work properly.
This time I enabled Secure Boot and did clean install Windows 11.
Everything works just fine now. Also updated to latest ME FW version.✅️👍
Thank you for your help!
Since you can see your current Intel ME Firmware version displayed in your BIOS (126.96.36.1990), your Intel ME firmware is not corrupted (you would have seen 0.0.0.0 as Intel ME Firmware version in your BIOS if your Intel ME Firmware was corrupted), so the root cause of your issue (Intel MEI Device missing from your Device Manager) seems to be located in Windows side (something has screws up your system drivers install).
- Follow this process to cleanup Intel Chipset Drivers, Intel MEI Drivers & Intel Serial IO Drivers :
There is something wrong. When I use MEupdateTool, it gives me succesful install. After reboot, my ME FW version in bios is still stuck on 188.8.131.520
Intel Management Engine Interface is installed correctly.
There is something strange going on.