A customer has come to the help desk where you work and complained their computer is regularly restarting itself without warning. After asking a few questions you have learned this tends to happen about 30 minutes after the computer boots. Based on this information what is the BEST course of action?
Replace the CPU with a more efficient Thermal Usage Model (TUM)
Purchase and replace the power supply with a higher wattage
A device restarting regularly without warning is likely one of two things: a bad power supply or overheating. A power supply failure tends to be more random, while a heat issue tends to be more predictable such as every 30 minutes or whenever a resource intensive program is used (e.g. a video game). This theory should be verified by testing the cooling fans are working correctly. Nothing should be purchased or replaced until a cause can be found.
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What are the signs of overheating in a computer?
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How can I check if my cooling fans are functioning properly?
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What should I do if the cooling fans are functioning but the computer still restarts?