If your Dell XPS 8920 desktop computer fails to start when you press the power button and requires pressing the reset button on the power supply, what should be your initial troubleshooting step?
a. Check the power cable connection and try a different power outlet.
b. Reseat the RAM modules and expansion cards.
c. Perform a power drain by holding down the power button.
d. Update the BIOS/UEFI to the latest version.