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File Version : 5.00.2175.1
Description : Yamaha PCI(x) Audio System (WDM)[1012]
Copyright : Copyright (C) Yamaha 1999
Product Version : 5.00.2175.1
Product Name : Microsoft(R) Windows (R) 2000 Operating System
Company Name : Microsoft Corporation
Internal Name : DS1WDM.sys
File Size: 358928 byte(s) 350.528 KB
MD5 : 9aebc1c7a45ddace1ce323afe186e5bc
SHA1: EA07C1DA475F30B0D568E221EF510F9ABDDCB2FF

Download DM9PCI4.SYS
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How to Install DM9PCI4.SYS
Repair Sys ProblemsFixing a corrupted or missing DM9PCI4.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.