How to tell if your PSU is dying?

how to tell if your psu is dying?

One of the reasons the computer won’t switch on is a faulty power supply. The most prevalent indicators of a power supply failure that will occur if the power supply unit dies are the causes and how you can extend the power supply unit’s life. Here, I will describe in detail How to tell if your PSU is dying? 

A desktop PC’s power supply unit has a capacity of 300W or less, 300 to 600W, or 600W or more. The greater the quantity, the higher the price, but the greater the power. 

Keep reading this article to learn more about “How to tell you if your PSU is dying?”

See also: How To View Broken Phone Screen On Computer.

psuIf this power supply unit fails, it will be unable to give adequate power to each component, resulting in various difficulties. Furthermore, because of the power issues, it is possible that other components will be damaged or that the device will not switch on.


I have prepared 11 unusual indicators that may indicate a Power Supply breakdown in your PC to assist you. With this article, you will learn how to identify problems with the PSU and tell if your PSU is dying. Whether it is a modular or nonmodular power supply unit when it is time to replace your old PSU with a new one. 

Signs that indicate How to tell if your PSU is dying?

Some signs that indicate that your PSU is dying are below: –

Random black and blue screen crashes

The Blue Screen of Death is a common power supply failure indicator.random black and blue screen crashes


If your PSU is dying, an electricity shortage frequently causes many physical components to malfunction. 

See Also: How to make your Chromebook faster

How to tell if your PSU is dying? It shows Display issues

It’s a 50/50 likelihood that the problem is with the monitor or the power supply.

How to tell if your PSU is dying display issues

If your PSU is dying, examine the display for erratic flashing or the emergence of lines and dots. Try it once with a computer and conventional power supply.

Check also: RAM Cleaner For PC To Improve System Speed


Various factors can cause the freezing of a personal computer; therefore, it cannot be said categorically.


But it may also be caused by a power supply unit failure. So it tells you your PSU is dying.

See Also: Voice chat apps

How to tell if your PSU is dying? It makes Strange noise from the PC case

If you hear different noises from the CPU, carefully investigate the sound.

pc sound

And if it is anywhere near the power cable, chances are you’ll need to start saving for a new PSU

See Also: How To Get Advance Download Manager (ADM) For PC?

Smoke/Burning smell

You may even hear a sound like a mini-explosion, and the equipment may suddenly shut down and emit a burning odor.

burning smell from pc

An exploding capacitor from the source normally causes this; thus, you will need to replace the capacitor (which can be difficult if you do not have the necessary tools) or change the power supply.

See Also: Best chrome themes

Random computer crashes and restarts

How to tell if your PSU is dying? While working on the computer and suddenly, it’s pitch black.

How to tell if your PSU is dying restarting automatically

Your Power Supply Unit may malfunction. That’s because your motherboard didn’t receive enough electricity to function. The CPU turns off without warning, then restarts, erasing your unsaved progress.

See Also: Best folder lock for PC

The computer turns on for some time and then suddenly turns off

This is one of the errors seen during start-up. Although this is typical, it does not always indicate that your power supply has failed.

How to tell if your PSU is dying shutdown of pc

Sometimes it’s all due to dust build-up inside your cabinet, which might cause overheating or make it difficult for the driver slots to load. As a result, the boot is abruptly removed. 

See Also: How to get bee Tv for PC

How to tell if your PSU is dying? Your PC won’t start, but the case fan spins

The case fans are spinning, but the computer isn’t booting up.

pc fan spin

If you have tried and it’s still the same, Then it’s a lost cause. Re-plug the entire motherboard after opening the complete cabinet.

See Also: ADM for PC

Presence of frequent electric shocks when you touch the metallic part of the computer

How to tell if your PSU is dying? When you contact the power supply, you are shocked; this shows a lack of insulation between the high-voltage circuits of the power supply and the case.

How to tell if your PSU is dying shock from pc

Because energy is necessary to power the system, repeated high-voltage surges may cause the power supply to fail over time.

See Also: Windows 10 is not activated anymore

The power supply fan spins, but there is no power to other devices

Large voltage surges can damage your power supply if your PSU is dying.

power supply fan spins

It would be best if you also pointed out the implications of low-voltage input. , your power supply fan may spin, but your CPU will not switch on. 

Overheating of PSU

Your computer’s power supply unit (PSU) may overheat if the load created by the computer is too great.

over heating

 Suppose the unit’s internal cooling fan fails to function. It may result in your PSU dying if it is overheating.

Why Do PSUs Fail?

Brown-Outs: Voltage drops that are either purposeful or unintentional. These load reductions may be applied in an emergency, such as when everyone is running their air conditioning units due to a heat wave

Interfering electricity
Unclean or Foreign Substance

Time of life: While most warranties run between 5 and 10 years, this is not guaranteed. Moreover, how frequently you use your computer affects its lifespan

See Also: How to control the fan speed on PC 

What actions might be taken to increase a PSU’s lifespan?

Use temperature monitoring software, which is widely accessible online, to maintain your computer’s temperature below 80 degrees. Download one and keep the internals under control at all times.

If it is being used in a confined space, try to transfer the computer to a location with some space. The PC will perform better if Windows or macOS are recent versions.power supply failure

Calculate how much power your system needs overall. The amount will increase by 20%, and you have it. The Power Supply Unit must have that amount of Wattage installed. Never utilize the additional 20% mark for longevity.

Avoid settling for a low-cost option when you purchase a PSU, but it does not imply you must get a top-of-the-line Good Quality PSU. Remember to stick with a reputable brand and factor that into your spending plan.


How could I tell whether switching to a different power source is necessary?

An insufficient power supply is there when your computer won't even start. Regardless of whether everything else on your computer is damaged, if your power supply is still functioning, you should still be able to see a power LED blinking near the source or on the case's front.

What are power supply failure symptoms?

Failure to Turn On (System won't boot up or locks up) Automatic Rebooting lock-ups during application use on occasion. Simultaneous failure of the fan and hard drive to spin up (+12 failure)

What causes a power supply to go bad?

Interference with power generation: Lightning, power failures, and other factors might affect the electricity supply. Overheating and ventilation problems are the most common reasons for SMPS failure.

How can I tell whether the problem is with my PSU or GPU?

A faulty GPU generally causes freezing, a blank screen (no display), or strange graphical behavior. Although a defective PSU normally has no power and is dead, I have observed them occasionally trigger restarts.

Can a weak PSU damage GPU?

Yes. The problem is that a defective PSU can harm other computer components in addition to your GPU over time. It could even stun you as it slowly but destroys your entire computer.

Can a PSU be ruined by dust?

A major worry is the power supply's air intake. When the power supply's air intake is restricted, it risks overheating and burning out. In most cases, dust and fibers that enter your computer become trapped on the power supply's air intake grill.


The power supply unit is delicate for individuals who use a computer regularly. You must repair the component promptly if it fails, regardless of the initial symptoms. Many folks, I’m sure, don’t know how to identify whether their power supply unit is faulty. In this article, I hope to clear up any misconceptions so that you may self-diagnose your power supply and evaluate if it is in good working order or is on the point of failing. Keep a close eye on the check, and keep the dust off the rack, and your Power Supply Unit will last a long time.

See Also: iOS emulator for PC

Recommended For You