I'm hoping somebody can help me out. I'm trying to figure out the purpose of mmdrv.exe and why it is consistently eats about 20% of my available CPU.

Location of file is C:\WINNT\SYSTEM32\mmdrv.exe

I've exhausted google and microsoft support and still can't find anything substantive on this executable or its resource needs.

Based on references to mmdrv.dll on the net I assume that mmdrv.exe is a multimedia subsystem that is used for audio output by the computer.

I have noticed that the CPU usage does seem to coincide with a running IEXPLORE.exe process. When Internet Explorer isn't running mmdrv.exe fluctuates between 0-10% of the running processes.

Can anyone shed some light on this?

I suspect that this executable is a part of mercury loadrunner software.

Do you have installed one ?

Regards Hristo Shekov

Found this in Yahoo Groups.

http://groups.yahoo.com/group/LoadRunner/messages/15301?viscount=100

LoadRunner - Discussion of issues related to Mercury Interactive's LoadRunner load testing tool.

Check for Mercury Interactive programs in your Add/Remove Programs list. SiteScope, Loadrunner, QuickTest Pro. If there, then uninstall them if you wish.

This is their downloads center: http://downloads.mercury.com/cgi-bin/portal/download/index.jsp

Hope this helps?

_________________

Microsoft MVP Consumer Security 2006, 2007 & 2008