How to fix DRIVER_IRQL_NOT_LESS_OR_EQUAL (storahci.sys) error?

Question

Issue: How to fix DRIVER_IRQL_NOT_LESS_OR_EQUAL (storahci.sys) error?

I have a problem on my Windows OS. All of a sudden the screen was blocked by BSOD saying: DRIVER_IRQL_NOT_LESS_OR_EQUAL (storahci.sys). The window stays on the screen for about a minute and the system restarts. What should I do to end this hell?

Solved Answer

It seems that you have a problem with .sys file. In fact, this issue is quite serious because .sys files are a very important part of the Windows OS. These files are responsible either for critical system’s processes or device drivers. Therefore, if one of .sys files gets damaged or corrupted, issues like BSOD occur. Thus, DO NOT ignore storahci.sys error.

Storahci.sys is a file that is installed on the system by default along with Windows 7, 8, 8.1 or 10. Therefore, it doesn’t matter which Windows version you are using, this file is on it meaning that DRIVER_IRQL_NOT_LESS_OR_EQUAL BSOD can come out on each of them.

There are several other Windows system files that could be related to the same error, including mfewfpk.sys, kbdclass.sys, ndis.sys, netio.sys, Netwtw04.sys, and Epfwwfp.sys, so the solution for the problem might become confusing – so we provide multiple fixes below.

Nevertheless, a research has revealed that DRIVER_IRQL_NOT_LESS_OR_EQUAL (storahci.sys) error most frequently occurs on Windows 10. Specialists point out that this error may emerge due to the following reasons:

• Recent hardware changes;
• lack of device drivers;
• software and hardware incompatibilities;
• Windows 10 update failure;

Luckily, DRIVER_IRQL_NOT_LESS_OR_EQUAL (storahci.sys) error has a solution. In fact, a couple of them. Since it may not be clear what causes this BSOD error on your Windows, you should try each fix until that irritating blue screen stops from coming.

Fix DRIVER_IRQL_NOT_LESS_OR_EQUAL (storahci.sys) error

How to fix DRIVER_IRQL_NOT_LESS_OR_EQUAL (storahci.sys) error?

In order to fix storahci.sys error, which says that DRIVER_IRQL_NOT_LESS_OR_EQUAL , you should try the following fixes. Since there is no single storahci.sys fix that would be suitable for all victims, start from the first one as it has helped most frequently and if it’s not helping, try the other ones. We hope that the following instructions will help you to get rid of BSOD DRIVER_IRQL_NOT_LESS_OR_EQUAL (storahci.sys).

Fix 1.

In case you encounter DRIVER_IRQL_NOT_LESS_OR_EQUAL (storahci.sys) error during Windows 10 upgrade setup, then try disconnecting all unimportant peripherals and only then launch the upgrade. storahci.sys file is used by Microsoft AHCI controller. According to Windows specialists, AHCI controller may be distracted by multiple storages, which is why CD/DVD, SSDs, HDDs, and other external peripherals should be disabled before upgrading earlier Windows versions to Windows 10.

NOTE: do not unplug the storage on which you are installing Windows 10 upgrade.

Fix 2.

To fix DRIVER_IRQL_NOT_LESS_OR_EQUAL error, check and update AHCI controller driver. It is recommended to replace the driver either with Intel or AMD driver. Choose the driver according to the chipset that you are using. To check that, you have to hold Windows key and press R. Then type msinfo32 and click OK. Finally, look for the Processor field. If your Windows system runs Intel processor and chipset, then access Intel’s official website and download the correct version of Intel Rapid Storage Technology driver. In case of AMD chipset, go to the official ADM’s website and look for an automatic scanner, which will inform you which driver is needed on your system.

Fix 3.

Update Windows system. Windows update operation should be performed regularly in order to ensure that all needed drivers are provided. Luckily, it’s very easy to run this function. For this purpose, just click Start, type Windows Update and select Check for Updates. After a couple of minutes the system will inform you if any updates are missing. If there are some drivers out-of-date, then select run Windows Updates and everything else will be done automatically.

Fix 4.

If any of the aforementioned fixes did not help you to fix storahci.sys error, the we recommend you to install Windows 10 one more time. If you are not sure how to do that properly, navigate to the official Window’s website and find the instructions right there.

Finally, in order to keep your Windows 10 system running smooth, we highly recommend installing a PC optimization tool, such as Reimage. This software will inform you about missing updates in advance, will check and repair registry errors, prevent damage/corruption of system files, protect the system from virus/PUP infections, and initiate a bunch of other useful performances that will grant the best performance of Windows system.

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