To Clear the NVRAM, I pressed Ctrl+ESC and plugged in the AC.

However, the backlight turns on but nothing appears on the screen.
And even if I force a power restart, it won't boot anymore.

have to disconnect the battery and reconnect it to boot.

How can I solve this? BIOS is already up to date.

Additionally, I have a problem with Intel AMT's AMT_AuditLog and am trying Clear NVRAM to fix it.