[Fix] Installed New CPU No Display (100% Working)

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Before you go ahead and open up the CPU casing, first check all the wires and connections. Now check if the monitor is functioning properly or not. If there is nothing wrong with the monitor, try troubleshooting the peripherals that are attached to the PC.

Disconnect all the peripherals and see if the display is alright when the PC boots up or not. This way find out the faulty peripherals. If everything is okay here, check if the RAM is perfectly positioned or not. Finally, reset the BIOS and see if that changes anything. To know more about the ‘installed new CPU no display’ issue, keep on reading. 

Installed New CPU No Display

How to Solve ‘Installed New CPU No Display’

It might be quite frustrating when there is no display after installing a new CPU on your PC. But you are not the only one here with this problem. And there are many prominent solutions to this particular no-display issue.

Whether you have built a new pc, you expect your PC to be started without any complications. But sometimes, the newly installed CPU causes an issue with the display. Especially when you have upgraded to a better GPU or RAM, this particular problem tends to occur more. 

So before you go any further and try one of our solutions to solve the no display issue, first check if all the ports of your monitor and HDMI cable are perfectly plugged into your CPU and the power or not. Now let’s start the troubleshooting.

Method 1: Force Restart your PC

If the screen is still black when you press the power button, try force restarting it. Just press and hold the power button for 10 seconds. Do this three times repeatedly. This should take you to the Windows startup repair option. 

If the restart does not solve your issue, you should just skip this one and follow the next method.

Method 2: Check the Monitor

Now check if the monitor functions perfectly or not. If your CPU starts and the monitor’s power light turns on right then, then the monitor is working perfectly. But if it does not, then check all the wires and HDMI cables. All disconnect and reconnect all the power adapters as well. 

If the light still does not work, take the monitor to the repair shop. However, if everything is okay with the monitor, then move to the next method.

Method 3: Disconnect all of Your Peripherals

Sometimes, the peripherals might not be compatible with your device and hence cause this issue. To check the peripherals, first shut down your PC. Then disconnect all the peripherals. After that boot up the device and see if the display works perfectly or not.

If the display works perfectly, it means one of the peripherals is causing this issue. Try connecting each of the devices and then restart the desktop to find out the faulty device. 

Method 4: Reset the BIOS Settings to Default

To do this, turn off the PC by simply pressing and holding the power button. Disconnect the PC from power and then remove the CMOS battery. Wait for 5 to 10 minutes and then reconnect the CMOS battery and boot up the device. This should reset the BIOS settings to default.

Why Is My CPU Working but No Display?

As we have mentioned already, there might be many reasons behind this problem, including some silly reasons like loose or faulty connections or wrong source inputs. Apart from this, reseating the key components of your CPU like RAM, and GPU can also fix this issue. 

So in that particular case, the faulty installation of those components might be the reason here. Also, there might be some other critical internal hardware issues that cause this issue. To fix those issues, you might need to ask for help from tech experts.

How Do I Get My Computer to Recognize My New CPU

Even though your CPU upgrade is not that huge for example from i3 3rd generation to i5 10th generation, sometimes the computer refuses to recognize the newly installed CPU. It is not that of a big deal. 

First click on the search icon and type ‘device manager’ and press enter. Now expand the Processors and there you will find all the cores of your processor. Then right-click on each of these cores and uninstall it from the device. And do not forget to uninstall this for every core.

However, after uninstalling every core, a window will pop up, asking for permission to restart. Say No to that and keep on uninstalling. Once all the cores are uninstalled, restart the PC.

Now you might be wondering why you are uninstalling the Processor cores. Do not worry at all. It only uninstalls the cores but does not remove them completely. After restarting they will be just back like before. 

When the reboot is completed, the computer will not recognize the CPU anyway because you have done a reset. As a result, the computer will start repopulating the drivers on your device manager. So now if you check your processor section on your computer, you will find the cores just like before.

Can a CPU Cause No Signal?

When your CPU starts without any issue but there is a No Signal message on your monitor, you might have some hardware issues with the RAM, CMOS battery, Graphics card, or faulty cable connections. 

This hardware has a decent warranty and hardly faces any physical issues. So, it is only possible that you have excessive dust issues in your CPU casing. And as these components are prone to the excessive dust build-up issue. They might have been dispositioned and then refused to function properly. 

To solve this issue, you can just simply uninstall these components and then get rid of the specks of dust, rub the component lightly and then install it. This method might work perfectly with a CMOS battery that you can find right beside the motherboard. Also, you can follow the same procedure with the RAM too.

Should I Reset My PC After Installing a New CPU?

When you install a new CPU, your computer recognizes that automatically. But maybe that happens in a perfect world. Most of the time, you have to put effort to make your computer recognize the newly installed CPU. 

CPU is one of the key components of your desktop PC. And when you change it, you have to reactivate the licenses. Though you do not have to do this when you change the RAM or GPU. Instead, you can just upgrade the drivers. But with the upgrade of CPU, you have to reactivate the licenses. So just sign in to your Microsoft account and add it to your PC and you are good to go.

Frequently Asked Questions

Does changing the CPU affect Windows 10?

Windows 10 does not recognize your new system if you have brought a huge change in your computers like motherboard, CPU, or the main storage drive. So in that case, you might have to reinstall some of the programs you had previously on your desktop.

Can I just swap out the CPU?

Yes, you can swap out the CPU as long as the motherboard and the CPU cooler are compatible with it. Also, upgrading some other components might become essential to make the CPU compatible with the rest of the PC.


Facing such an issue with the display can be awful sometimes, considering the amount of money you have invested to upgrade your PC. But if now you or someone from your family faces this installed new CPU but no display issue, you can tackle the situation more effectively.

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