You don't tell where you are looking for info, but http://www.google.com/search?q=cmwin.exe gives 112 hits.

http://www.prevx.com/filenames/X3430789557253511941-X1/CMWIN.EXE.html is rather vague; a lot of the other hits (but surely not all) seem to be to torrents (colored red by SiteAdvisor) or games or (some) seem legitimate.

So the first things to do:
- find cmwin.exe on your system
- look at it's properties (is there a version tab?)
- find out how it is being run

Replacing hardware for what could be malware doesn't make sense of course. First a good diagnosis.

Post your findings.

Kees