Is My Power Supply Dead?

In today’s world, electronic gadgets have become a vital part of our daily life. From smartphones to laptops, we are fully dependent on them. All these devices require a stable and reliable power supply to function correctly. Therefore, a dead or faulty power supply can significantly impact the performance of these gadgets.

Most of the time, when our electronic device refuses to turn on, we tend to assume that it’s due to a dead battery. However, it’s not always the case. Sometimes, the issue could be with the power supply. So, how do you identify if your power supply is dead? In this article, we will discuss the signs that indicate a dead power supply.

Is My Power Supply Dead?

When you are facing a power supply issue, there are various signs that can indicate if your power supply is dead or not. Below are some of the commonly observed signs that indicate a dead power supply:

• Generally, the power switch will not turn on the computer, and no lights will turn on the motherboard.

• You will find that the fans inside the computer are not spinning.

• Neither the keyboard nor the mouse is responsive when connected to the computer.

• There is a complete absence of any sound coming from the computer.

• In some instances, you might hear an unusual clicking or irregular sound from the power supply.

• The screen won’t show anything.

• The power supply cord might give off an electrical burning smell or some kind of odor.

• Sometimes the computer can fail to boot even in safe mode.

• There might appear to be some discoloration or spots visible on your power supply.

If you observe any of the above symptoms, then it’s time to check your power supply unit. Try testing the computer with a known-good power supply to know for sure whether the power supply is dead or not.

If you’re still unsure, seek help from a professional technician.


1. Can a dead power supply harm my PC?
Yes, a dead power supply can cause damage to your PC by causing a short circuit or power surge.

2. How can I determine if my power supply is dead?
If your PC won’t turn on or if you hear no fan noise or any sign of activity from your PC, it’s highly likely that your power supply is dead.

3. What are the usual causes of a dead power supply?
A dead power supply can be caused by power surges, overheating, age, or physical damage.

4. Can I repair a dead power supply myself?
It’s generally not recommended to repair a dead power supply yourself, as it can be hazardous due to the high voltage involved. It’s better to have it repaired or replaced by a trained technician.

5. How much does it cost to replace a dead power supply?
The cost of replacing a dead power supply can vary depending on the model and brand of the power supply. Generally, it can range from $50 to $150.


In conclusion, it is not always easy to determine whether a power supply is dead. However, there are several signs that you can look out for, such as strange noises, overheating, and failure to power on. If you suspect that your power supply may be dead, it is important to seek professional assistance to avoid any further damage to your computer or electronics. Remember, prevention is always better than cure, so consider investing in a high-quality power supply to avoid any future problems.

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