FIX BSOD Error: DRIVER_IRQL_NOT_LESS_OR_EQUAL(ndis.sys) on Windows 10

driver irql not less or equal ndis.sys bsod error

After you upgrade the system to Windows 10, the PC runs into the BSOD error. It shows as Driver_IRQL_NOT_LESS_OR_EQUAL (ndis.sys). And of course, you will see the different .sys files such as ndu.sys, netwtw02.sys, tcpip.sys, epfwwfp.sys, etc.

Other BSOD errors:
BSOD Error: SYSTEM_SERVICE_EXCEPTION on Windows 10, 8, 7

Mostly, this is because of the network driver issue. So you can try to solve the network driver issue to solve this BSOD error.

1. Reboot your PC to the safe mode. Of course, if you can enter windows 10 in normal mode, you can also do all the next steps in the normal mode. If in normal mode, you cannot solve it, try to enter the safe mode do these again.

2. Type device manager in the search box to open device manager.

type device manager in search box

3. Expand Network adapters, and find the network device. Right-click it and choose Uninstall to uninstall the device driver.

uninstall network drivers

4. Click OK to confirm uninstall the device.

confirm device uninstall

5. After that, click Scan for hardware changes in the toolbar to reinstall the driver.

If your computer also had the DRIVER_IRQL_NOT_LESS_OR_EQUAL error, you need to download the network driver from the manufacturer’s website and install it manually. If you had already installed wireless driver, you need also download the latest wireless driver for it. This will help to solve netwtw02.sys error.

Also, for an easier way, you can use Driver Doctor to download and update network driver to solve the BSOD error. Driver Doctor is professional driver update software to help you fix the outdated drivers and error drivers.

download driver doctor

After you run the Driver Doctor, it will scan all your PC devices. Then find the outdated drivers and problem drivers including network driver.

update network driver

You can download and update your network driver with Driver Doctor directly. After that, reboot your computer, you will find the BSOD error is solved.

For the DRIVER_IRQL_NOT_LESS_OR_EQUAL (epfwwfp.sys), you can also solve it by this way.

1. Right-click Win icon and choose Command Prompt (Admin).

command prompt admin

2. In command prompt, type this command:
DEL /F /S /Q /A "C:\Windows\System32\drivers\epfwwfp.sys"
delete epfwwpf.sys file
Then press Enter key.

After that, the system will help to delete the dpfwwfp.sys file. So your dpfwwfp.sys BSOD error will be solved.

If it reminds you that could not find the epfwwfp.sys, you can try to follow the above way to uninstall and reinstall network driver to solve it.

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