FIX: IRQL GT ZERO AT SYSTEM SERVICE error

Milan Stanojevic
by Milan Stanojevic
Deputy Editor
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  • IRQL GT ZERO AT SYSTEM_SERVICE error is caused by incompatible hardware or software, therefore, it’s crucial for you to run Windows Update and to download the latest updates.
  • Drivers are an essential component of every operating system, and if your drivers are outdated or corrupted, you might get the IRQL GT ZERO AT SYSTEM SERVICE error. To avoid these types of errors, try to update your drivers frequently. It's relatively simple, and the easiest way to do it is by using Device Manager.
  • BSoD errors are pretty nasty but that's why we created a whole section to Troubleshoot and fix Blue Screen of Death errors.
  • There's no shortage of Windows errors, but every time you encounter one, we fix it and publish it in the Windows 10 errors hub to help you solve the problem.
How to fix IRQL GT ZERO AT SYSTEM SERVICE error in Windows 10

Solution 6 – Check the hard drive

  1. Enter the Advanced Startup (Restart your computer while holding the Shift key).
  2. Choose Troubleshoot > Advanced Options.
  3. Select Command Prompt from the list of options.
  4. When Command Prompt appears, enter the following lines and press Enter after each line in order to run it:
    • bootrec.exe /rebuildbcdIRQL GT ZERO AT SYSTEM SERVICE Windows 10 error
    • bootrec.exe /fixmbr
    • bootrec.exe /fixboot
  5. Some users are also suggesting that you need to run additional chkdsk commands as well. To perform these commands, you need to know drive letters for all your hard drive partitions. In Command Prompt you should enter the following (but remember to use the letters that match your hard drive partitions on your PC):
    • chkdsk /r c:IRQL GT ZERO AT SYSTEM SERVICE Windows 10 error
    • chkdsk /r d:

    This is just our example, so keep in mind that you have to perform chkdsk command for every hard drive partition that you have.

  6. Restart your computer and check if the issue is resolved.

Solution 7 – Uninstall problematic software

According to users, IRQL_GT_ZERO_AT_SYSTEM_SERVICE error can often be caused by problematic software, and in order to fix this issue, it’s advised to locate and remove the problematic application.

Often cause for these types of errors is your antivirus software, and many users reported issues with Bitdefender, so it’s highly recommended that you uninstall it.

In addition to uninstalling Bitdefender, you should use the dedicated uninstaller tool to completely remove it.

Many antivirus programs leave certain files and registry keys after you uninstall them.

And in order to completely remove antivirus software from your PC and fix the IRQL GT ZERO AT SYSTEM_SERVICE error, it’s important to use the proper uninstaller tool.

Many security companies offer these tools for download, so be sure to get one.

It’s worth mentioning that almost any antivirus tool can cause a BSoD error, and in order to fix this problem it’s recommended to remove all third-party antivirus tools.

Even if you remove your antivirus tool, your computer still has Windows Defender, so you won’t be completely unprotected.

In addition to antivirus, many users reported that other software, such as SoundTap, NCH Software Suite, or even Bluestacks and Andy OS can cause IRQL GT ZERO AT SYSTEM SERVICE error.

In order to fix this issue, it’s highly recommended to remove the aforementioned software.

If you need to use any of these tools, you can try installing the latest version that hopefully doesn’t have the same issues.

These are just some common causes for this error and bear in mind that almost any application can cause this error to manifest.

So be sure to remove any application that you installed or updated in the last couple of days or weeks.

Solution 8 – Disable Hyper-V

Many users are claiming that disabling Hyper-V in Windows 10 fixes the IRQL GT ZERO AT SYSTEM SERVICE error. Disabling Hyper-V is rather simple, and you can do it by following these steps:

  1. Press Windows Key + S and enter windows features. Select Turn Windows features on or off.
    advanced-features
  2. Once the Windows Features window opens, locate Hyper-V and uncheck it.
    hyper-v
  3. Click OK to save changes.

After disabling this feature problem with IRQL GT ZERO AT SYSTEM SERVICE should be resolved.

Solution 9 – Update your BIOS

In some cases, these types of errors can appear if your BIOS is out of date, and in order to fix this problem, it’s advised to update BIOS.

Updating BIOS is an advanced procedure, and if you decide to perform it, we advise you to be extra careful.

To see how to update your BIOS, you need to check your motherboard manual for detailed instructions.

As for the required files, you can download the latest BIOS for your motherboard from your motherboard manufacturer’s website.

Bear in mind that you can cause permanent damage to your PC if you don’t update BIOS properly, therefore be extra careful.

Solution 10 – Check for hardware problems

As we already mentioned, BSoD errors can be caused by faulty hardware, so it’s advised to check if your hardware is working properly.

If you installed any new hardware recently, you need to remove it or replace it and check if your PC is working without it.

In addition to removing new hardware, you need to check if your current hardware is working properly.

The most common cause for this error is RAM, and in order to check the RAM, you’ll need to use a tool such as MemTest86+.

Simply move the tool to a USB flash drive, boot your PC from it and let it test your memory for a few hours.

If your memory is working properly, you might want to check if other hardware components are working correctly.

Finding a faulty component might be difficult, so you might want to contact an expert.

IRQL GT ZERO AT SYSTEM SERVICE error can be troublesome, but in most cases, this error is caused by a problematic software, and removing the problematic software will fix the issue in most cases.

FAQ: Read more about System Service errors

  • What is a system service exception error?

A System Service Exception error is a Blue Screen of Death (BSoD) error which shows that the operating system encountered a problem while running one of the processes of the system.

  • What does System exception mean?
This class is the base class for all Exceptions. When an error occurs, the system or the currently executing application signals it by delivering an Exception with information about the error.
  • How can I fix IRQL GT ZERO AT SYSTEM SERVICE error?
Download and install Windows updates regularly and update your drivers. If the problem persists, we have an excellent guide to fix this BSoD error.

Editor’s Note: This post was originally published in October 2018 and has been since revamped and updated in March 2020 for freshness, accuracy, and comprehensiveness.

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