Common Signs of a failing PC Power Supply:

• Power-on Errors (system not starting or locking up)
• Unexpected Rebooting
• Concurrent failure of the hard disk and fan to spin up
• Touching the casing causes electric shocks.
• Applications that occasionally lock up
• The motherboard’s LEDs are all off and the system is dead.
• Tiny brownouts can result in system failure and restart
• Failure of the fan causing the power supply to overheat
• Popping local circuit breakers when the computer is turned on
• The PSU’s or other components’ smoke
• Power-on Errors (system not starting or locking up)
• Unexpected Rebooting
• Concurrent failure of the hard disk and fan to spin up
• Touching the casing causes electric shocks.
• Applications that occasionally lock up
• The motherboard’s LEDs are all off and the system is dead.
• Tiny brownouts can result in system failure and restart
• Failure of the fan causing the power supply to overheat
• Popping local circuit breakers when the computer is turned on
• The PSU’s or other components’ smoke

Basic Self-troubleshooting tips:

• Verify that the surge protector or power strip is connected in and switched on.  
• Look inside the computer’s back for any loose cords, particularly the main power cable.  
• Try shifting the power line to a different outlet or look for any power issues with the outlet.  
• Use a different power cable. 
• Discharge the computer’s power by unplugging all cables including power supply for about 10 min. Plug the power cable back in after the computer has finished draining, and look for a status light on the power supply. If there is no lights visible, power supply may need to be replaced. 

Did you know?..

• A desktop PSU last on an average of 5-10 years and 3-5 years for laptops.
• While selecting a desktop power supply, wattage is undoubtedly crucial, but PSU efficiency is much more so. Ineffective distribution causes additional heat and wasted power, which may shorten the life of your components.
• Purchasing a low-cost, low-quality PSU might result in numerous problems, such as general instability and broken parts.
• PSU power requirements will vary depending on the build, with higher-end components typically requiring more power than their lower-end counterparts.
• Some of the most crucial components of your computer, like the motherboard, CPU, or GPU, not to mention storage devices, can get destroyed as a result of voltage fluctuations and power surges.