A user has decided to build a new computer with parts purchased from a popular online vendor. The user has referenced online resources to assemble the unit. However, when the user presses the power button, the new computer does not load the operating system's installer. Instead, the onboard speaker beeps and immediately reports an issue on the screen. Which of the following is the MOST likely issue with the new build?


A. The user did not plug in the processor's fan.
B. The user did not apply thermal paste to the CPU.
C. The user did not seat the GPU correctly.
D. The user did not install the power supply.