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File Version : 5.1.2600.0 built by: WinDDK
Description : ALi Disk Performance Driver
Copyright :
Product Version : 5.1.2600.0
Product Name : Windows (R) 2000 DDK driver
Company Name : Windows (R) 2000 DDK provider
Internal Name : aliperf.sys
File Size: 7168 byte(s) 7.0 KB
MD5 : 45503894bf9bde88c2622a201aa5fe47
SHA1: 18A297D09B15A234A030F0F19B2852A4A0BFF6E3

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