PassMark OSCheck is a tool that allows systems integrators and PC repair centres to quickly verify the installation of the operating system and other software applications. Missing files, corrupted files and out of date system files can be detected before they cause a problem. This can be useful in a production line environment or for checking PCs that have come back for repair. OSCheck can also be useful security tool for detecting files that may have been changed or modified by malicious software or intruders. Systems administrators and software product support personnel may also be able to use this tool to compare the current configuration of a PC to a known standard configuration. 30 day free trial Windows 98, 2000, XP, 2003 Server, Vista.