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File Version : 4.00
Description : Olivetti SCSI Controllers Driver
Copyright : Copyright (C) Microsoft Corp. 1981-1996
Product Version : 4.00
Product Name : Microsoft(R) Windows NT(TM) Operating System
Company Name : Microsoft Corporation
Internal Name : oliscsi.sys
File Size: 14000 byte(s) 13.688 KB
MD5 : 8ce5690bf87b50dc5f571d25ad519b49
SHA1: F89BCFEAB95B41C335D05DD41586EA6BD68CEDA5

Download PCASp50.sys
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How to Install PCASp50.sys
Repair Sys ProblemsFixing a corrupted or missing PCASp50.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.