Which system starts up first when you turn on your PC?

Operating system
198
Antivirus program
41
ROM Bios (Basic Input/Output System)
625
TPM (Trusted Platform Module)
42
ROM BIOS or PC BIOS) is non-volatile firmware used to perform hardware initialization during the booting process (power-on startup), and to provide runtime services for operating systems and programs. The BIOS firmware comes pre-installed on a personal computer's system board, and it is the first software run when powered on.
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