Hi! I installed Windows 8.1 to my Acer Nitro 5 AN515-54 with 9th Gen Intel, and I installed the Serial IO drivers (which have device id of A368 and A369, same as 8th Gen), and they work fine, however, the I2C Hid Device throws a Code 51 error in device manager, which prevents the touchpad from working. I had someone mod the BIOS to unlock the advanced options, but there is no option to enable PS2 touchpad (unless that option is still hidden). I can disable Serial IO devices, but this does not cause the touchpad to fall back. Anyone know why the I2C HID Device is throwing a Code 51 error? On Windows 11, it works great!
