A user reports that their device is overheating after recently installing several applications. They also notice several pop-ups. Which of the following should a technician do to troubleshoot this issue?

While closing programs and restarting may temporarily alleviate some performance issues, it does not address the root cause of the problem. If malware is present, the underlying issues will persist after the restart, and this step alone will not resolve the overheating or pop-up notifications.

Checking for operating system updates is a good practice for maintaining device performance, but it is not directly related to the symptoms described. In this scenario, the immediate concern is the potential malware causing the overheating and pop-ups, which an OS update would not resolve.

Investigating hardware issues is important in general troubleshooting, but the specific symptoms reported—overheating and pop-ups—strongly suggest a software-related problem, particularly malware. Addressing hardware issues prematurely could delay the necessary steps to eliminate the malware threat.