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File Version : 5.1.2600.2180 (xpsp_sp2_rtm.040803-2158)
Description : SMBus Class Driver
Copyright : Microsoft Corporation. All rights reserved.
Product Version : 5.1.2600.2180
Product Name : Microsoft Windows Operating System
Company Name : Microsoft Corporation
Internal Name : smbclass.sys
File Size: 6912 byte(s) 6.768 KB
MD5 : 77f7f2683cf22efe704e65ed82865a1d
SHA1: D248B2897BFA651DA0AC69FA04365477917964C5

Download SiSG664.sys
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How to Install SiSG664.sys
Repair Sys ProblemsFixing a corrupted or missing SiSG664.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.