What is PQNTDrv?

PQNTDrv.sys is a Windows driver. A driver is a small software program that allows your computer to communicate with hardware or connected devices. This means that a driver has direct access to the internals of the operating system, hardware etc. The free file information forum can help you determine if PQNTDrv.sys is a Windows system file or if it belongs to an application that you can trust.

Run a free scan to check for PQNTDrv drivers in need of updating

PQNTDrv.sys file information

The process known as PowerQuest Boot Mode Driver or PQNTDrv belongs to software PowerQuest product or Norton PartitionMagic by PowerQuest (

Description: PQNTDrv.sys is not essential for the Windows OS and causes relatively few problems. The PQNTDrv.sys file is located in the C:\Windows\System32\drivers folder. Known file sizes on Windows 10/8/7/XP are 3,252 bytes (61% of all occurrences), 4,228 bytes or 3,360 bytes. 
The driver can be started or stopped from Services in the Control Panel or by other programs. The program has no visible window. There is no detailed description of this service. PQNTDrv.sys is not a Windows core file. There is no file information. PQNTDrv.sys appears to be a compressed file. Therefore the technical security rating is 45% dangerous, however you should also read the user reviews.

Uninstalling this variant: In case of problems with PQNTDrv.sys, you can also completely remove PartitionMagic or Norton PartitionMagic (Control Panel ⇒ Uninstall a Program).

Recommended: Identify PQNTDrv.sys related errors

Important: Some malware disguises itself as PQNTDrv.sys, particularly when not located in the C:\Windows\System32\drivers folder. Therefore, you should check the PQNTDrv.sys process on your PC to see if it is a threat. We recommend Security Task Manager for verifying your computer's security. This was one of the Top Download Picks of The Washington Post and PC World.


User Comments

Partition magic nt driver for use in Windows XP/2000
Powerquest (Partition Magic) Boot Mode driver
Come if you install PowerQuest PQBoot
On my computer it comes from the Partition Magic version 7 CD
  Manfred Peschke  

  Martin   (further information)
Powerquest - Partition Magic - Boot Mode driver
it comes with partition magic 8

Rating chart

Summary: Average user rating of PQNTDrv.sys: based on 15 votes with 7 user comments. 12 users think PQNTDrv.sys is essential for Windows or an installed application. 2 users think it's probably harmless. One user thinks it's neither essential nor dangerous.

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Best practices for resolving PQNTDrv issues

A clean and tidy computer is the key requirement for avoiding problems with PQNTDrv. This means running a scan for malware, cleaning your hard drive using cleanmgr and sfc /scannow, uninstalling programs that you no longer need, checking for Autostart programs (using msconfig) and enabling Windows' Automatic Update. Always remember to perform periodic backups, or at least to set restore points.

Should you experience an actual problem, try to recall the last thing you did, or the last thing you installed before the problem appeared for the first time. Use the resmon command to identify the processes that are causing your problem. Even for serious problems, rather than reinstalling Windows, you are better off repairing of your installation or, for Windows 8 and later versions, executing the DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.

To help you analyze the PQNTDrv.sys process on your computer, the following programs have proven to be helpful: Security Task Manager displays all running Windows tasks, including embedded hidden processes, such as keyboard and browser monitoring or Autostart entries. A unique security risk rating indicates the likelihood of the process being potential spyware, malware or a Trojan. Malwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.

Other processes

PQNTDrv.sys [all]