A user calls a technician and states that their computer shutdowns after about 15 minutes of being turned on. The user also states that if they wait about an hour and turn the computer back on, it…

A user calls a technician and states that their computer shutdowns after about 15 minutes of being turned on. The user also states that if they wait about an hour and turn the computer back on, it will function properly, but will shutdown after 15 minutes as it did before. Which of the following should the technician check on the motherboard that could be causing this problem?