I have a 5 year old Gateway PC (700x). It is now shutting off automatically – it technically shuts into hibernation mode due (power switch LED is yellow). The fan on the power supply is not running so I assume this shut down is thermal related. It runs for about 45 minutes from cold status before shutting down, when hot about 5 minutes.
Could the fan be defective and replaced – or do I have to replace the entire power supply?
Looking at the fan it does not appear to have any power leads so I assume the fan runs off internal power feed from the power supply.