m15 R4, firmware update stuck on Aptio Setup Utility

I'm using an Alienware M15 R4 bought in May 2021. 

I restarted the laptop after downloading some firmware/driver updates. When I came back to my laptop after 15 minutes, I saw this on the screen:

Aptio Setup Utility - American Megatrends, Inc.

Flashing…WARNING! System firmware being updated. Keyboard is locked. DO NOT TURN THE POWER OFF !!! Once firmware update is completed, system will be automatically rebooted 

- Program new data -

Update OEM EC Block

- 100% -

My keyboard is indeed locked as stated, and the arrow keys, ENTER, ESC, F1, F9 and F10 do not work. I waited another 20 minutes and it's still stuck on that screen.

The fans are still running noisy. I am afraid of bricking my computer if I force restart, and I'm not even sure if I'll be able to force restart because I'm unsure if the power button works. (Update: Power button doesn't work, even after holding for 30 seconds.)

I've Googled this problem and I came across an answer on Microsoft's page that advised to wait 24 hours. I've also read two accounts of people just unplugging the laptop and letting the battery die out before restarting their laptops with no issues.

Please help!