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File Version : 2. 0. 5. 0
Description : USB Modem/Serial Device Driver
Copyright : Copyright (C) C-motech Co.,Ltd.
Product Version : 2. 0. 5. 0
Product Name : C-motech USB Modem/Serial Device Driver
Company Name : C-motech Co.,Ltd.
Internal Name : cmusbser
File Size: 103680 byte(s) 101.256 KB
MD5 : 33f77f7cb2c2efe34b3bc9cc716f73f3
SHA1: BD254BFB5B7F6E1FF405C1923DF4826E42AADBC8

Download CHDAud.sys
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How to Install CHDAud.sys
Repair Sys ProblemsFixing a corrupted or missing CHDAud.sys error is an easy process with a few steps. Open the zip-file you downloaded.Extract the .sys file to a location on your computer. We recommend you to unzip the file to the directory of the program that is requesting the file.
If that doesn't work, you will have to extract the file to your system directory.
By default, this is C:/WINNT/system32/drivers (Windows NT/2000).
or C:/Windows/system32/drivers (Windows XP, Vista, 7).
Make sure overwrite any existing files (but make a backup copy of the original file)
That should be it. Although not necessary you can reboot your computer as well.