Does your system restart during graphic intensive programs? Is your computer sluggish and you didn't really do anything yet and you're positive it's not a virus or a maintenance issue? Let's see how to fix this issue.
1. Unplug the computer and open the case
2. Use a can of compressed air to blow out the vents, the processor heat sink and all fans.
3. Make sure all the vents to the computer are able to allow airflow in and out of the case.
4. With the case open, plug the computer in and turn on the computer, checking for any malfunctioning fans. Replace as needed.
5. With the computer unplugged, use a drill to cut a hole into the case so you can mount more fans in the case.
6. Remove the heatsink and fan off the processor.
7. Scrape off the thermal paste off the processor and bottom of the heatsink.
8. Use Goo Gone to remove the rest. Then follow with isopropyl alcohol (Rubbing Alcohol)
9. Add new thermal paste, the size of a dime, to the processor.
10. Attach the new Heatsink, and secure it.
11. Remove the fan off the heat sink, and replace it with a better one.*
*Some heat sinks require you to replace the whole thing, so don't do the thermal paste thing until you have a new fan AND heat sink.
Please note: No person or company paid me to say anything about any of the topics above. These are my opinions and what I have observed using the program personally. Your experience may vary. I am not responsible for any data loss that may occur. Use my guides at your own risk.