What is mv61xx?

Mv61xx.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 mv61xx.sys is a Windows system file or if it belongs to an application that you can trust.

Run a free scan to check for mv61xx drivers in need of updating

Mv61xx.sys file information

The process known as Marvell Thor Windows Driver or Marvell Thor and Odin Windows Driver belongs to software Marvell Thor or Marvell Thor and Odin by Marvell Semiconductor (

Description: Mv61xx.sys is not essential for the Windows OS and causes relatively few problems. The mv61xx.sys file is located in the C:\Windows\System32\drivers folder. Known file sizes on Windows 10/8/7/XP are 150,568 bytes (44% of all occurrences), 152,616 bytes, 68,736 bytes, 143,256 bytes or 156,200 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. It is not a Windows system file. The file is a Microsoft signed file. The mv61xx.sys file is digitally signed. Mv61xx.sys is a Verisign signed file. mv61xx.sys appears to be a compressed file. Therefore the technical security rating is 5% dangerous, however you should also read the user reviews.

Recommended: Identify mv61xx.sys related errors

Important: Some malware disguises itself as mv61xx.sys, particularly when not located in the C:\Windows\System32\drivers folder. Therefore, you should check the mv61xx.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

MV61xx.sys is part of the Marvell Thor HDD controller software, which is part of the utilities software pack on the CD which comes with Asus motherboards. If you uninstall this the HDD will not boot up again and you will be forced to re-format and re-install Windows from scratch. I found this out to my cost previously.
  David Andrew  

Summary: Average user rating of mv61xx.sys: based on 3 votes with 1 user comment. 3 users think mv61xx.sys is essential for Windows or an installed application.

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Best practices for resolving mv61xx issues

A clean and tidy computer is the key requirement for avoiding problems with mv61xx. 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, for Windows 8 and later versions, executing the 7DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.

To help you analyze the mv61xx.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. BMalwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.

Other processes

mv61xx.sys [all]