Final answer:
To access the system setup program (BIOS/UEFI) on a PC, reboot the computer and press a specific key such as Delete, F2, F10, or ESC during the boot-up process. This key varies by manufacturer and the window to press it is brief. The system setup allows you to configure multiple settings.
Step-by-step explanation:
To access the system setup program on a PC, also known as the BIOS or UEFI firmware settings, you typically need to reboot the computer and press a specific key during the boot-up process. This key is often Delete, F2, F10, ESC, or another function key depending on the manufacturer of the motherboard or the computer. As soon as you turn on the PC, watch the screen for a prompt that tells you to press a certain key to enter 'Setup' or 'BIOS.' If you miss the prompt or the screen does not display which key to press, you can usually find this information in the user manual of your motherboard or on the manufacturer's website. Remember to be quick as the window for pressing the key is often very short. Once you press the correct key, the system setup program will open, allowing you to configure hardware settings, boot order, system time, and other options.