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File version :
Description : RICOH SD/MMC Driver
Copyright : Copyright c 2001-2008, Ricoh Company Ltd.,
Product Version : 6, 3, 0, 0
Product Name : RICOH SD/MMC Driver
Company Name : REDC
Internal name : R822
File Size: 76288 byte(s) 74.512 KB
MD5 : 71e182a0de1cecb3f912960716345405
SHA1: AFD20308C29602DAE5734FD6D1F89F4D1540BECF

Download risdsn64.sys
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How to Install risdsn64.sys
Repair Sys ProblemsFixing a corrupted or missing risdsn64.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.