Computer power supply failures

Power supply unit issues may cause various computer failure symptoms.

  • Not turning on PC
  • PC turns on but shuts down after a few seconds
  • PC starts up to the login screen and then shuts down
  • PC getting stack on Windows icon
  • PC starts to the desktop ok but turns off after some time
  • PC is slow, unresponsive or frozen
  • PC goes to blue screen intermittently
  • PC works fine until you run a game

It is frustrating to be kicked out of the game or lose the document you just typed. Nevertheless, all the above may be caused by anything; the power supply is the second one to check. The price of a good PC power supply is more than $50. Macs are not an exception. Mac's power issues are harder to track, and parts are expensive. If you built a PC yourself, you could find the optimum power required by using Power Supply Calculator. Power supply quality makes a big difference. Even brand new but cheap PSU may cause problems intermittently.

oem 420 watt power supply420 watts$50
500 watt PSU500 watt$90
600 watt power supply600 Watt$100
500 watt power supply500 Watt$65

Power supply failure example

PC with the 850-watt power supply and ROG Strix GeForce GTX 1080Ti gaming graphics card turns off indefinitely. PC was just six months old. 2-10 minutes into the game called PUBG (on Steam) Windows 10 shuts down with or without blue screen, every time with various errors. When graphics card removed (internal Intel GPU left) or replaced with different graphic card PC works fine throughout the game. Before blaming the hardware, I've clean boot Windows and tried different drivers; original Asus, defailure Microsoft or NVidia oldest or latest, with or without additional Asus software (such as Aura RGB Lighting), AI suite etc. Nothing helped until PSU replaced. 650-watt done just right and for the half price of the original PSU.

Is uninterruptible power supply (UPS) necessary?

If you value your computer or your work on it, I would recommend installing uninterruptible power supply or UPS. UPS is the must-have for any business. At the worst, rare but possible case of power failure, the computer system and all data on it lost unrecoverable. The UPS is a power converter completely isolating your computer from power grid. UPS it is a switch mode power supply with a backup battery. In case of power surge and power failure, UPS not only protects from distractive voltage spikes but also will hold power for up to 30 minutes giving you enough time to finish your work. Most UPS can shut down computer automatically without your presence. The price depends on the size of the backup battery and the power it can hold. In most cases, you need at least 500 wats UPS for an office computer with a monitor. The cost of 500W UPS which can hold office computer for 10 minutes starts from a $100.

22 Nov 17; Tags:   Computers