PQNTDrv.sys file information
The process known as PQNTDrv or PowerQuest Boot Mode Driver belongs to software Norton PartitionMagic or www.powerquest.com/support or PowerQuest product by PowerQuest (www.powerquest.com).
Description: PQNTDrv.sys is not essential for the Windows OS and causes relatively few problems. PQNTDrv.sys is located in the C:\Windows\System32\drivers folder.
Known file sizes on Windows 10/11/7 are 3,252 bytes (64% 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 is not visible. There is no detailed description of this service. PQNTDrv.sys is not a Windows core file. PQNTDrv.sys is a file with no information about its developer.
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:
If you run into problems with PQNTDrv.sys, you can also do the following:
1) uninstall
www.powerquest.com/support software via Windows Control Panel/
Add or Remove Programs (Windows XP) or
Programs and Features (Windows 10/8/7)
2) ask
Customer Support to assist you.
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.
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 1cleanmgr and 2sfc /scannow, 3uninstalling programs that you no longer need, checking for Autostart programs (using 4msconfig) and enabling Windows' 5Automatic 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 6resmon 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 executing the 7DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.
To get your computer running as fast as it did on day one, you can 8reset your PC. Your personal files will remain intact, but any programs you installed will need to be reinstalled.
To help you analyze the PQNTDrv.sys process on your computer, the following programs have proven to be helpful: ASecurity 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. A good Bantivirus software detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.
Other processes
cirap.exe volmgrx.sys easybatterymgr3.exe PQNTDrv.sys spacedeskservice.exe psxss.exe mmloaddrv.exe aakore.exe gtavlauncher.exe mitsijm.exe rwctaskservice.exe [all]
Score
User Comments
Manfred Peschke
Martin (further information)
SkinneR
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.