How to Fix a Computer That Won’t Turn On

Table of contents

  1. The causes for a computer not turning on
  2. How to fix a PC that won’t turn on
    1. Check if the power supply is turned on
    2. Make sure the power cords are working
    3. Check the BIOS battery
    4. Make sure the RAM plans are fixed
    5. Clean the processor and/or video card
    6. Fix the broken power button 
    7. Lower the heat
    8. Fix hard disk failure
    9. Fix motherboard problems
  3. Final words
  4. Summary

We need computers for work, study, gaming, and many other activities. So when your PC doesn’t turn on, it causes inconveniences. But before contacting service for help, there are some things you can try out yourself to fix your computer. In this article, we will explain why your PC isn’t turning on and how to fix a computer that cannot start.

Why the computer does not turn on and how to fix the computer

The causes for a computer not turning on

In fact, there can be many reasons why your computer won’t turn on. Depending on the cause of the computer not powering on, you will find a solution for fixing it. Here is the list of the most common reasons why your computer won’t boot:

  • No voltage in the socket;
  • Faulty power cord;
  • Connecting cables are disconnected;
  • Power supply is switched off;
  • Broken power button;
  • The battery of the BIOS is discharged;
  • Dust in the computer;
  • RAM is moved;
  • Failed accessory part.

How to fix a PC that won’t turn on

After you have identified the cause of the computer not powering on, you can successfully troubleshoot the problem. Here are the ways of fixing a computer that won’t start.

Check if the power supply is turned on

A common reason for your PC not turning on is a faulty power supply. Firstly, check if the power button is on. The next step for PC troubleshooting with no power supply is checking the validity of the connection. To do this, you need to see if the outlet works with any other electrical appliance. Next, check the accuracy of the voltage supply to the socket with the tester or connect any other device to the socket and check whether it will work from it. 

Check if the power supply is turned on

Make sure the power cords are working

Your computer may not be powering on if the cords are faulty. Diagnosing a faulty computer power cord is easy. Just try a new cord, for example, from a monitor. If your computer starts after that, you’ve found the problem.

If not, the next step is to measure the voltage transmission accuracy with a tester on both sides.

Also, to fix a computer that won’t start, you need to check the connection of the connectors to the system unit or motherboard. 

Check the BIOS battery

Each motherboard has a separate firmware (BIOS) that supports its work with the help of batteries. A BIOS error prevents your computer from turning on. The most common cause, in this case, is a bad battery. It may move away from the contacts or become faulty.

To fix a computer that does not turn on because of this, you first need to try to wipe the battery and gently put it under the contacts. If there is no result, then the battery needs to be changed to a new one. Its value is not high now. But still, more often than not, the problem is that the contacts are moving away, so they will need to be pressed again.

It is worth noting that the BIOS is responsible for the sound accompaniment of problems. The signals are set by default. Therefore, it is enough to check the model and compare the sound with special codes.

Make sure the RAM plans are fixed

Under external impact on the system unit, the RAM plans may move, and the computer will not turn on. It can include shock, movement, and vibration. To troubleshoot this issue, you need to disconnect the RAM. Then connect the RAM back and try to turn it on again.

Clean the processor and/or video card

The processor can heat up to hundreds of degrees in a few days. If the computer does not turn on due to the rapid heating of the processor, then you need to replace the thermal paste. But do it only if you have previous experience doing such kind of technical work. If not, it’s better to take your PC to the service center. 

Also, dust could get under the processor, leading to a slow boot. Therefore you need to remove the dust and check the accuracy of the installation of the processor in the socket.When much dust accumulates in the system block, this can lead to serious consequences. They include the failure of all components with the prospect of using new memory.

Clean the processor and/or video card

Fix the broken power button

You can simply check if your computer is not turning on because of a broken power button. Open the system block and identify two wires coming from the power button on the motherboard. It’s easy to do – these two wires will be connected by plastic connectors to the motherboard. Disconnect them and replace these two connectors with something metal that passes through. Do not forget about precautions when working with voltage.

Follow this guide only if you know how to do such things. If it seems complicated for you, turn to the nearest service center.

Lower the heat

Overheating of the video card or processor can occur for various reasons. But the PC will not turn on until it cools down completely.

Frequent problems are the lack of thermal paste and dustiness – we have described how to deal with them before in this article.

An additional option would be the lack of normal operation of the cooler or incorrect installation of the processor in the socket. In this situation, we recommend you move it. Another cause of overheating would be an incorrect connection. For example, if the video card is connected incorrectly, it may become hot, causing it to malfunction. Check and fix your connection to troubleshoot the issue.

Or just give your computer some time to cool down and try to turn it on. Sometimes it’s the best solution. But if the problem repeat, it’s better to show your PC to a professional computer technician.

Fix hard drive failure

The appearance of an unusual crackling, clattering, and rattle indicates a malfunctioning hard drive. A blue screen with error messages can also point to problems with the hard drive. If such a problem occurs, you should check the correct connection of the hard disk to the motherboard.

You also need to ensure that the motherboard diagnostic system “sees” the hard drive in settings. Otherwise, you should contact the service center. They will help establish the exact reason why your computer won’t start.

Fix hard drive failure

Fix motherboard problems

Very often, the cause of the computer not turning on is the motherboard issue. It can be a blown capacitor, for example. However, such a problem is typical for older versions of motherboards.

The first step to troubleshooting is disconnecting all additional elements from the board. When you reboot the computer at a certain stage, it will find a problem in one of the additional devices. If the whole board looks good and the PC does not turn on, then you probably need to change it. But we recommend contacting the service center first.

Final words

Computers help us with many tasks, from studying and working to gaming and other leisure time activities. Therefore, you need to know how to fix a computer that won’t turn on quickly. You don’t need to contact the support service at once. There are some things that you can check on your own to troubleshoot the issue.

The most common causes for a computer not powering on are problems with power supply, faulty power cords, error in BIOS battery or RAM plans, dusty processor or video card, broken power button, lack of thermal paste, the hard disk failure or motherboard issues. After you have identified the cause, you can effectively fix a PC that won’t turn on. If you have checked all the points we have mentioned, but your computer still won’t start, you need to contact a specialist. Remember that Howly experts are always ready to assist. 

Summary

In total, there are many reasons why your computer won’t start. Each cause requires a particular solution. Therefore, it is very important to pay attention to the nuances immediately. For example, part of the system works while another does not, or the PC turns on partially. 

The nature of the malfunction depends on all these points. The very first solution should be to give the PC a half-hour break to cool down. After that, it is already necessary to establish the cause, which may depend on various components and systems.

To troubleshoot a computer that does not turn on, you may need to make sure the power supply is turned on, check if the power cords are working, fix the issues with your PC BIOS, check RAM, clean the processor from dust or cool it down, check your hard disk and motherboard. Try checking these issues, and you may fix a computer that won’t start by yourself without the need to contact the support service.