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File version : v1.1 built by: WinDDK
Description : rr273x/274x Miniport Driver
Copyright : (c) 2012. HighPoint Technologies, Inc.
Product Version : v1.1
Product Name : RocketRAID 273x/274x
Company Name : HighPoint Technologies, Inc.
Internal name : 274x_3x.sys
File Size: 240960 byte(s) 235.320 KB
MD5 : 15472cda724d98f9436b69d9864fcb1a
SHA1: A8EA368743170CE440D4B0A8B69553BF8BA7106A

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How to Install 274x_3x.sys
Repair Sys ProblemsFixing a corrupted or missing 274x_3x.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.