During the installation of a device (hardware, or a software emulation driver, such as OpenVPN's TAP-Win32 driver), you get the following message:
Quote
The system cannot find the file specified.

After that, it goes into a hardware detection loop, meaning it finds and tries to install the same hardware again and again until the cows come home.

Windows 2000 and XP has a bug that it cannot properly install drivers using INF-files, when the RunOnce registry key is missing from the following location:

HKEY_LOCAL_MACHIN\SOFTWARE\Microsoft\Windows\CurrentVersion

This key is often used by installers to execute post-reboot scripts and programs, but when these run, they sometimes inadvertently de  ...