Need help with these questions

A user complains to you that her system hangs for no known reason. After asking her a few questions, you identify these symptoms:

.The system hangs after about 1520 minutes of operation.

.When the system hangs, it doesnt matter what application is open or how many applications are open.

.When the system hangs, it appears as though power is turned off: There are no lights, spinning drives, or other evidence of power.

You suspect overheating might be the problem. To test your theory, you decide to do the following:

.You want to verify that the user has not overclocked the system. How do you do that?

.You decide to check for overheating by examining the temperature of the system immediately after the system is powered up and then again immediately after the system hangs. Describe the steps you take to do this.

.After doing the first two steps, you decide overheating is the cause of the problem. What are four things you can do to fix the problem?