I started panicking (like, I was really scared) and pushed the POWER button. The LEDS turned on but the screen was still pitch black for 15 seconds. When I was already on the verge of tears, the PC made a loud ass BEEP sound (that I had never heard before) which startled me, and then showed another screen saying ''Finalizing BIOS update''. Then after a few minutes it loaded Windows. I'll never do this again. (2/2).