How to Tell if CPU is Dead

Let’s say you just bought a new computer and it refuses to turn on. It seems like your computer is broken! But, before you panic, there are a few things you can do to try and fix the problem. In this article, I explain how to figure out if your CPU is dead or if the issue is with other parts of the computer.

What is a CPU?

CPUs are the brains of your computer. They are essentially processors that help your computer do its work. When your CPU dies, it means you can’t access important information or programs. If you don’t know how to tell if your CPU is dead, you may need to take your computer in for repair.

How to Tell if CPU is Dead
How to Tell if CPU is Dead

How do I know if my computer’s CPU is dead?

If your computer is not responding to basic commands such as powering on or resetting it, then there’s a good chance that the CPU is dead. In order to determine if this is the case, you will need to do a few tests.

  • The first test is to see if your computer can boot into Safe Mode.
  • To do this, turn on your computer and press the restart button, then press F8 several times until you reach Safe Mode.
  • If your computer fails to start in Safe Mode, then your CPU is most likely dead.
  • The second test is to see if you can access your computer’s BIOS (Basic Input Output System). This can be done by turning on your computer and pressing the DEL key while simultaneously pressing the F2 key.
  • If you are successful in accessing BIOS, then your CPU is most likely dead.
  • The last test is to see if you can access any of your computer’s hard drives. This can be done by first turning on your computer and then clicking on My Computer in Windows Explorer.

Once in My Computer, locate and open the drive that contains the operating system (usually C:). Then try accessing any of the

Signs your computer’s CPU is dead

If you’re having problems with your computer, it’s always a good idea to check the processor. If it seems like the CPU isn’t working properly, there are a few things you can do to determine if it’s actually dead or just malfunctioning.

Below mentioned are some of the most common symptoms of a dead CPU:

-Your computer doesn’t start up at all
-Your computer takes a long time to start up
-Your computer freezes or crashes frequently
-The CPU fan is constantly running even when the computer is off
-CPU temps are consistently high regardless of activity,

If your computer’s CPU is not powering on, there are a few things you can do to check. First, make sure the power cord is plugged in and turned on at the wall.

If it’s not, try another outlet or switch. Next, press and hold the power button for about 10 seconds to see if the machine turns off.

If it does, then the CPU is most likely dead. If it doesn’t turn off, try plugging in a different USB device to see if that powers it off. If it still doesn’t turn off, your CPU might be dead and you will need to replace it.

What to do if your computer’s CPU is dead

If you have a laptop, chances are good that the CPU is the most important part of the machine- after all, it’s responsible for running all the programs you need. So if your laptop’s CPU is dead, your computer won’t be able to do anything!

Frequently Asked Questions

Is my CPU dead?

If your computer won’t start up, or you see a blinking light on the front of the case, it’s probably a dead CPU. If your computer is running slowly or freezing sporadically, it may also be a dead CPU. Sometimes, however, CPUs just need to be replaced. If you’re not sure whether your CPU is dead or not, take it to a qualified technician.

Will my motherboard be damaged?

No, modern motherboards are designed to handle even the most severe CPU failures without any damage. The main cause of motherboard damage is a bad power supply.

Why does my computer need a new CPU?

Some people think that a damaged CPU can’t be fixed, but it’s easy to fix if you know which socket your CPU is in (some CPUs have more than one). If your computer has been running slowly or freezing sporadically and you’re not sure why it could be because your CPU is defective.

How much will it cost to replace a CPU?

This depends on the city where you live. From $50 up to $150, but usually from around $100 to $150.

Does replacing a CPU void my warranty?

Yes, computer manufacturers do not offer any financial protection when repairing or replacing components that are not covered by their warranties (like motherboards).


If you’ve followed the instructions in this article and you’re still having trouble determining if your CPU is dead, there are a few other things you can do to try and diagnose the issue. First, make sure that all of your cables are plugged in securely and that there’s no debris or dust on the motherboard or CPU.

Next, check to see if your computer is overheating. If it is, there’s a good chance that your CPU is dying. Finally, try using a different power supply to see if the problem changes. If none of these remedies work, then it might be time to replace your CPU.

Stephen Smith
Hi, I'm Stephen Smith. I love traveling, computer hardware, and software. I’m constantly trying to learn new skills and programming languages. Reviewing new pieces of hardware is one of my favorites hobbies. Drop by any time to leave me a message if you have any questions.