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File Version : 4, 0, 0, 0
Description : OA Helper Driver
Copyright : Copyright 2010 Emsi Software GmbH
Product Version : 4, 0, 0, 0
Product Name : OA Helper Driver
Company Name : Emsisoft
Internal Name : OAdriver
File Size: 236104 byte(s) 230.584 KB
MD5 : c5f9479f443b8160cdad3a6fa2ea60fe
SHA1: 75A000EC6F2E587BB70BF0E420F6AAEAA6F21839

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