A client, Ann, is having issues with a PC shutting down. There are no error messages displayed before the system powers off. Ann reports that this started after she installed and began using CAD software. The hard drive, video card, and RAM all meet the software requirements and have passed diagnostics. Which of the following is MOST likely the issue?
A. The video card has 3D acceleration disabled.
B. The hard drive is IDE instead of SATA.
C. The hard drive needs to be repartitioned.
D. The PSU is underpowered for the system.