Fix Input Not Supported

Input Not Supported

Is your monitor screen showing an Input Not Supported error message? Don’t you know how to troubleshoot this issue on your Windows computer?

Then you have landed in the right place. In this guide, we are going to provide the complete information that allows you to fix this Input Not Supported.

Mostly, Acer users come across this Input Not Supported after booting their PCs/laptops. Regardless of the brand, you can use the following methods without any compatibility issues.

In our primary investigation, the Input Not Supported occurs due to the wrong configuration of the screen resolution and expired monitor drivers.

Apart from that, there are several other reasons for it. Don’t worry! You can get to know all those details in the below sections. Just have patience and apply the steps as we mentioned.


Input Not Supported: Problem Overview

The hardware peripherals that are connected to the CPU have to work correctly without any failures. If any of them are damaged or show an error, then we can’t do any of our tasks.

In case if there is any problem with your monitor, like older monitor drivers, then you will see the Input Not Supported error. Users are saying that this error occurs after they boot their computer.

At first, your desktop screen turns black and displays the Input Not Supported message. Until you solve this problem, you can’t do any activity on your system.

If you ask us why the Acer or other device shows the Input Not Supported error, then read the below reasons.

  • If you have connected the monitor cables loosely, then this problem occurs.
  • You might be using older monitor drivers on your PC.
  • Incorrect screen resolution
  • An issue with the Boot Configuration also causes this error.
  • Users who are using a second monitor may face the Input Not Supported error.
  • Older keyboards connected to the PC
  • Expired GPU drivers

After finding out the reason, scroll down the below sections to know all those tips and tricks that eliminate this Input Not Supported error.


Input Not Supported: Related Problems

Following are the problems that are completely related to this Input Not Supported error. You may check out the paragraphs in order to fix them whenever encountered.


Input Not Supported: Basic Troubleshooting Steps

The basic methods that will help you in fixing the Input Not Supported are given as follows.

  • Check for Hardware Issues

Is the display cable connected between your monitor and CPC damaged? Or do you plug the display cable loosely? Then there are chances of occurring this Input Not Supported error.

So, check the cable for any internal damages. If it is not damaged, then unplug and re-plug it into the device tightly. Sometimes, using USB-C ports can also fix this error.

There are some other ways, such as connecting to the monitor device using HDMI or Display Port.

  • Use Another Monitor:

To know that your monitor is working well or not, connect some other monitor to your computer. Set the resolution to high and check the Input Not Supported error appears again or not.

If there are no issues with another monitor, then there is some problem with your monitor. In case if you still face the same error, go through the following methods to fix it.

  • Set the Resolution to Low

In several cases, the users say that the Input Not Supported problem occurs when the screen resolution is high. That’s why we recommend you boot the PC in a low-resolution mode.

To do so, you need to boot the PC in safe mode. For that, follow the given procedure.

  1. Go to your Start Menu -> Click the Power options -> Select the Restart icon.
  2. While your system is restarting, press the F8 key continuously on your keyboard.
  3. Then you will see the Startup settings screen. In that, select the Enable Low-Resolution Video option by using the down arrow key.
  4. After booting the Windows PC, you have to change the display settings to the recommended resolution.


Steps To Fix Input Not Supported Issue

Don’t be frustrated! You have many other troubleshooting ways to fix the Input Not Supported on your Windows 10 PC.


  • Step 1

Update Monitor & GPU Card Drivers

Due to internal hardware issues or other reasons, your monitor drivers will corrupt. When this happens, showing the Input Not Supported error message is quite common.

Even the expired monitor drivers also cause several problems on your computer. Therefore, it is the best option to download and install the latest monitor drivers on your PC. For that,

  1. Open the official website of the monitor device manufacturer.
  2. From the site, you have to locate the newly released drivers.
  3. After that, download & install them on your computer. Within a few minutes, you can complete the monitor driver update process.

Like the same, you have to open the official site of your graphics card and get the latest drivers by downloading and installing them on your device.

If you follow the manual process, then you have to update the monitor device and GPU card separately. That’s the reason why we suggest the IObit Driver Booster.

It allows you to upgrade all the device drivers at once with a single click. So, get this best driver updater on your Windows PC to keep the drivers up-to-date.


  • Step 2

Modify Boot Options

You need to make some changes to the system configurations to fix the Input Not Supported error. Read the below instructions and use them as we mentioned.

  1. Press Windows + R -> Type msconfig -> Hit Enter.
  2. Go to the Boot tab -> Under the Boot Options section, check the checkbox of Base Video.
  3. Click Apply and OK to save.
  4. Reboot your Windows PC and go through some other steps below.
  5. Right-click on the empty area of your desktop and select Display Settings.
  6. From the drop-down menu, change the resolution that supports by your monitor. (We recommend the users to go with the Recommended Resolution).
  7. At last, open the MSConfig window and disable the Base Video.

Now, check the Input Not Supported error is resolved or not.


  • Step 3

Set the Display Settings

If the above changes didn’t solve the problem, then modify the display settings on your Windows computer.

  1. Open the Display Settings -> At the bottom, you will find the Advanced Display Settings, so click on it to open.
  2. Under the Choose Display section, select the monitor from the drop-down list that is causing issues.
  3. Go to the last, and click the Display Adapter Properties for Display 1.
  4. It opens a new window, and in that, select the Monitor tab.
  5. Under the Monitor settings, choose the recommended screen refresh rate.
  6. Finally, save the settings by hitting the OK button.

Restart your Windows computer and see the Input Not Supported issue is fixed or not.


  • Step 4

Enable CSM in BIOS

According to some reports, the chances of eliminating the Input Not Supported issue are more if we disable the CSM (Compatibility Support Module) in your BIOS.

Try your luck and follow the steps to disable CSM on your PC.

  1. Restart your Windows computer -> When you see the device manufacturer logo, press Del or F10 or F12 keys to enter into BIOS.
  2. Now, navigate to the Advanced tab -> Locate the Boot Menu -> Find the CSM and click on it to enable it on your PC.
  3. Use the F10 key to save the changes.
  4. Reboot the system and check the Input Not Supported error appears or not.


  • Step 5

Change the Game Display Settings

Sometimes, gamers see the input not supported error message while launching the games on their PCs. Don’t worry! You can fix it easily and quickly by simply changing the game’s display settings.

You need to change the display mode from full-screen to windowed mode. In some cases, pressing the Alt + Enter keys at the same time will change the display mode directly to the windowed mode.

Or else, use the following steps to change the display settings of the game.

  1. Go to the game’s installation folder -> Right-click the .exe file of your game -> Click Properties.
  2. Under the Target section, add -windowed at the end.
  3. Save and exit the window.

Now, start playing your favorite games without seeing the input not supported errors.


  • Step 6

Replace your Older Keyboard

Some people still use an older PS2 keyboard on their computers. To fix this Input Not Supported error, use the USB keyboard. This simple trick helped many users in fixing this issue.


  • Step 7

Replace the CMOS Battery

After using all these methods, you will lose your hope in solving it. Sometimes, a few simple tips and tricks can help you a lot. One such is taking off the CMOS battery and installing it after a few minutes.

Since CMOS battery stores a lot of information related to the configurations, BIOS, and others, replacing it will fix the issue.

  1. Disassemble your computer carefully -> On your Motherboard, remove the CMOS battery.
  2. Now, press the Power button on your PC to drain the entire energy.
  3. After 15 to 20 minutes, reinstall the CMOS battery and start your PC.

We hope that you will not see input not supported issues after booting your computer.


Tips To Avoid Input Not Supported

  • Keeping the device drivers up-to-date all the time is an essential thing to avoid these issues and protect the hardware components from damages.
  • When you are plugging the cables into the peripherals, make sure that they are correctly fixed into the slots; otherwise, you will see this kind of error.
  • Handle the monitor and other devices carefully because the damaged ones will never allow you to work properly. Also, replace the older devices with the brand new one to overcome these issues.


Contact Official Support

There are several users who solved this Input Not Supported without any remarks. At least one of the above troubleshooting methods will help you in fixing it.

We mostly say that the above tricks are much enough to solve the issue. But if you struggle to fix it till now, then we suggest taking the help of a professional technician.

We think there might some hardware issue on your monitor, so either go to the authorized store or contact an expert.

As it is not a difficult problem, it will be resolved easily and you can work on it without any interruptions.


Final Words: Conclusion

On the whole, you have to check whether your PC configurations will allow using the second monitor. According to us, the Input Not Supported happens to the users who use the second monitor device.

So, follow the above methods strictly and get rid of this problem on your Windows computer. We have listed the top-best techniques, and if anyone of you fixed with your own tricks, then share them with us.

Are you facing problems while applying the steps on your PC? Then leave a message in the comment box. We will clear all your queries.

We are here to offer our valuable services in providing tips on different tech-related problems. Thank you for your love and support.

  • Post last modified:October 30, 2021
  • Post category:Windows
  • Post comments:0 Comments

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