What is d344bus?

D344bus.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 d344bus.sys is a Windows system file or if it belongs to an application that you can trust.

Run a free scan to check for d344bus drivers in need of updating

D344bus.sys file information

The process known as PnP BIOS Extension belongs to software d344bus by unknown.

Description: D344bus.sys is not essential for the Windows OS and causes relatively few problems. D344bus.sys is located in the C:\Windows\System32\drivers folder. The file size on Windows 10/8/7/XP is 137,216 bytes. 
The driver can be started or stopped from Services in the Control Panel or by other programs. The program has no file description. The program is not visible. There is no detailed description of this service. It is not a Windows system file. Therefore the technical security rating is 48% dangerous, however you should also read the user reviews.

Recommended: Identify d344bus.sys related errors

Important: Some malware disguises itself as d344bus.sys, particularly when not located in the C:\Windows\System32\drivers folder. Therefore, you should check the d344bus.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

D344bus.sys ist der Treiber von daemon tools, ein CD-ROM-Emulator.
    (further information)
Dell Bios PNP connector
  Chris Long   (further information)
Gehört zu Daemon Tools 3.44 (DVD-ROM Treiber)
it appears to kill the windows boot where a SATA drive is the Device. if it loads properly it is invisable.
  Michael Callaway  
I can't use my video card because of it. Windows screen shows loading screen, but then no user menu.

Summary: Average user rating of d344bus.sys: based on 5 votes with 5 user comments. 3 users think d344bus.sys is essential for Windows or an installed application. One user thinks it's probably harmless. One user suspects danger.

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Best practices for resolving d344bus issues

A clean and tidy computer is the key requirement for avoiding problems with d344bus. 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 d344bus.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

d344bus.sys [all]