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How to Tell If A CPU Is Dead (Quickly & Easily!)

One of the most common computer hardware problems is when a CPU runs too hot and shuts down. If this happens, you can try to fix it by cleaning out your system’s cooling vents or even just unplugging the processor from its power supply. But if none of these are effective, then you will need to replace your old CPU with a new one.

The “dead cpu” is a computer that has become so slow and unresponsive that it can no longer be used. The first step to figuring out if your CPU is dead, is to see if the computer will respond to any commands. If it does not, then you have a problem with your CPU.

How to Tell If A CPU Is Dead (Quickly & Easily!)

Your computer’s major source of processing power is the CPU. As a result, a malfunctioning or dead CPU might render your computer completely useless. Knowing how to spot a dead CPU might help you determine when it’s time to replace it and prevent additional harm.

Frozen boot-up displays, no POST (Power-On Self Test), overworking fans, fast shutdowns after turning on, and a total loss of operation are all signs of a dead CPU. By inspecting the CPU and motherboard for evidence of damage, you can pinpoint the source of your computer’s problem. Also, pay attention to the noises your computer produces as it turns on.

Occasionally, the issue with your computer is caused by a defective component rather than a dead CPU. In this post, I’ll go over how to test for this as well as how to identify whether your CPU is dead.

The Signs and Symptoms of a Dead CPU

In general, if you detect one of these signs, it means your CPU is dead. While some of these problems may be caused by other faulty components, if you’re experiencing more than one of these symptoms, your CPU is almost probably dead.

There is no functionality.

Trying to turn on your computer is a certain technique to see whether your CPU is dead. If nothing occurs and your PSU is working, it implies your CPU is incapable of processing even the minimal amount of power required to start your computer.


When your CPU does a Power-On Self Test, which it does every time you switch on your computer, a POST screen appears. The purpose of the test is to check all of your computer’s components and see whether they’re all working correctly, as well as to identify which ones aren’t.

You may change the visibility and length of the POST screen’s display when starting up your computer by going into the BIOS settings and changing the visibility and length of the POST screen’s display. If your PC still doesn’t show the screen when it boots up, it’s most likely the CPU.


When a CPU fails, your computer’s fans have no way of controlling itself. As a result, when you turn on the computer, the fans will automatically switch to maximum speed, which will be heard with any fan.

Shutting down quickly

If your computer goes down virtually quickly after turning on, the issue might be with your CPU or power supply. It’s usually caused by a dead CPU, since the power spike has no regulator, and the system shuts down immediately to protect itself.

Freeze on the screen

If your computer’s screen freezes every time you switch it on, your CPU may be dead. The screen will usually stall on the loading screen, however the machine may sometimes start up and freeze on the home screen.


When anything goes wrong with your CPU, system-halt errors will appear. The “blue-death screen,” which appears just how it sounds, is the most well-known of these problems.

How to Find the Root of the Problem

If any of those symptoms appear on your computer, the next step is to attempt to pinpoint the source of the issue. Even if your CPU isn’t the problem, your computer has at least one component that isn’t working properly.

Damage that can be seen

The first thing you should look for is a problem with your motherboard. It’s typically evident to the naked eye if your motherboard has been subjected to an electrostatic discharge, a power surge, or even physical trauma.

When static energy is applied to metal in your computer, electrostatic discharge (ESD) occurs, causing a burst of electricity to overload some of your computer’s components. A power surge does the same effect, but it’s generally due to a broken power supply or shoddy manufacturing.

Look for burn marks on your motherboard, particularly around your CPU socket. The extraordinary electrical currents overheat the metal beyond its electrical rating, which is a definite symptom of electrical overload. This results in scalding and a loss of function.


Most motherboards of medium to high grade have a beep code speaker, which emits sounds when components fail. Listen to the noises your computer produces when you switch it on.

You may hear one, two, or no beeps if you test your motherboard without a CPU and execute the POST procedure. A single beep indicates a problem with your system’s memory, whereas two beeps indicate a problem with the motherboard.

There is almost probably a problem with your CPU if you don’t hear any beeps and your screen doesn’t turn on when the CPU is connected.

If your motherboard doesn’t have a beep code speaker, you may buy one separately to use throughout the test. If that’s not an option, you may just listen to the noises that your computer generates.

There is clearly a problem somewhere inside the system if the fans are working too hard or if you don’t hear anything at all.

Elimination Process in Parts

Disconnect everything from your motherboard save the PSU, CPU, heatsink, power switch, and case speaker to narrow down the defective component. Then turn your computer on and listen.

All of the components are working correctly if there are extended beeps. The sounds are your motherboard’s way of informing you that there is no memory connected.

If you don’t hear any beeps, you’re dealing with a broken CPU, power supply, or motherboard. If this is the case, and you have multiple of the symptoms listed above, your CPU is dead and has to be replaced.

Using a Different PC

Connecting to a compatible, fully functional PC is one guaranteed approach to see whether your CPU is the issue. To do so, you must first ensure that the computer can handle the CPU and that the machine you’re testing it on is functional with its existing CPU.

Remove the CPU from your existing computer and replace it with the CPU from your test machine. If everything is working well, your CPU isn’t the issue; rather, something else is.

If your computer isn’t working correctly and you’re having the same problems as before, the issue is most likely your CPU.

To minimize additional damage you your CPU, be sure to utilize safe procedures to decrease static energy surrounding it while transporting it.

What Should I Do If My Processor Fails?

My recommendation, at the risk of sounding like Captain Obvious, is to replace the CPU. Attempting to repair a CPU is beyond the ordinary gamer’s abilities, and CPUs weren’t supposed to be fried and fixed in the first place.

You might also begin by contacting the CPU’s manufacturer and informing them of the issues. Even if the CPU isn’t fully dead, there is usually still a problem with it. Furthermore, if the breakdown of your CPU is covered by the manufacturer’s warranty, replacing it is less of a hassle.

What if it wasn’t my CPU that was the issue?

If you conducted these tests and found that your CPU is OK, you’ll need to either undertake a more in-depth analysis of your system or contact the manufacturer of your motherboard.

You can describe the noises you heard when testing the CPU to the motherboard’s manufacturer, and they can assist you figure out what they indicate.

The issue becomes lot simpler to solve after that, and having a professional take you through it saves any possible harm from occurring.

Final Thoughts

In conclusion, if your computer is experiencing problems starting up and staying on, showing frozen displays, or overworking its fans, your CPU is probably dead or damaged. Simply listen to the noises your motherboard produces during boot-up to determine this, or test each of your critical components separately to narrow down the problem.


Is it possible for a CPU to die of old age?

No, in most cases. Electron migration may cause circuitry in CPUs to wear out over time. However, this procedure takes a long time and only occurs on low-quality CPUs.

Even on earlier computers, if your CPU suddenly shuts down, it’s most likely due to an electrical incident or severe circumstances such as high heat or heavy dust buildup.

What Causes a Computer Processor to Fail?

Overheating or electrostatic discharge, both of which may fully damage a CPU, are the most common causes of CPU mortality. Overheating takes longer, while electrostatic discharge destroys your CPU almost instantaneously.

Other factors, such as knocking your PC tower over or applying other blunt force to your computer, might cause the CPU to fail. This is the least common, because it usually causes the CPU to get dislodged rather than die.

Dislodging, on the other hand, may result in bent pins, which is a very separate issue.

How can I bring a dead CPU back to life?

You can’t unless you’re an android hiding from Blade Runners. You can attempt to operate the CPU with less cores, but you won’t be able to repair it if a major component of the CPU is damaged. The best course of action is to check with the manufacturer to determine whether the CPU is still covered by the manufacturer’s warranty.

Watch This Video-

The “how to tell if cpu is damaged from overheating” is a problem that can occur with many devices. It’s important to know how to tell if your CPU is damaged from overheating, so you don’t have to buy a new one just because of this issue.

Frequently Asked Questions

What are the signs of a dead CPU?

A: The signs of a dead CPU are not always the same. Some symptoms can include but are not limited to: A hard lock and/or freeze, computer becoming completely unresponsive, blue screen errors or warnings, error codes appearing on screen randomly.

How long does it take for a CPU to die?

A: It depends on what you are doing. If a CPU is being used for an intense amount of tasks, it can die quickly. However, if the CPU is not heavily used and just running simple tasks like web browsing or office work, they could last up to 8 years before needing replacement.

Can a CPU just die?

A: Yes, sometimes a CPU is just gone.

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