Hello, I have lenovo legion 5 15imh05 (board: nm-c911) and I have a problem with a keyboard.
When I hold power button for ~30 seconds or unplug RTC battery keyboard will work only one time. After laptop reset or shutdown, keyboard won't work.
In 90% cases when I unplug power supply and turn on laptop on a battery, keyboard works even after plugging power supply - I can't turn on laptop with a power supply and get keyboard working.
Shortcuts Fn + F1-F12 are working. Keyboard is fine.
I replaced IT8176FN-56A and reprogram it with a dump from previous chip and it worked for...

I have ACER Nitro 5 model AN515-51 main board model LA-E911P Rev 1A after replacing the mainboard keyboard stop working properly.
Some keys not working like Q,Z,C and some keys show deferent chr$ if i press K i will get I press D for F4 key etc...
i have tried all software issues like drivers test the keyboard on Windows 10 and Windows 11 and Linux with same problem.
I have check the keyboard connector on the mainboard every thing looks ok.
Then i replaced the keyboard with new one ......same problem exact same keys problem.
I need your advice if anyone face...

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