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File Version :
Description : Sample Driver for Ralink 802.11g Wireless USB Adapters
Copyright : Copyright (C) 2004 Ralink Technology Inc.
Product Version :
Product Name : Ralink 802.11g Wireless USB Adapters
Company Name : Ralink Technology Inc.
Internal Name : rt2500usb.sys
File Size: 245376 byte(s) 239.640 KB
MD5 : 70aeec67e87a2002e6b2cc353d56e222
SHA1: 215463312B5E279AB59AD98A5D23063147338FE5

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