.CPQ File Extension
Compaq OEM Disc Configuration File
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What is a CPQ file?
File found on Compaq OEM system restore discs, which are called Compaq Restore Plus! CDs; uses the filename OSLANG.CPQ and contains configuration information for restoring the original Windows operating system on the computer.
The OSLANG.CPQ file is saved in a plain text format. It is not meant to be edited by users. Instead, it is referenced by the Compaq restore software when resetting the computer to a stable state.