Select an operating system and version to see available software for this product. Product sold without warranty: Please use the product number and serial numbers of the new product to validate warranty status. This product was designated to be returned to HP. Let HP identify any out-of-date or missing drivers and software How does HP use product data collected with this service? Any warranty support needed would be completed by the reseller that sold the product.

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Select your operating system and versionChange Detected operating system: Warranty removed from product: This tool applies to Microsoft Windows PC’s only. See your browser’s documentation nitebook specific instructions.

Please wait while we process your request. Not sure presarioo drivers to choose? This product detection tool installs software on your Microsoft Windows device that allows HP to detect and gather data about your HP and Compaq products to provide quick access to support information and solutions.

Learn more about HP’s privacy policy. Drivers may be in development so please check back at a later date or visit the product homepage.


This page requires Javascript. Please try again shortly. Open download list One or more of the values preasrio is not permitted. The serial number provided does not match the previously selected product. Please verify your product is powered on and connected, then try again in a few minutes.

Compaq Presario CQ40-401AU Notebook PC How to

Solution and Diagnostic Notebookk Collection. We were unable to retrieve the list of drivers for your product. Europe, Middle East, Africa. Select the desired files and choose ‘Download files’ to start a batch download. Please enter a Product Number to complete the request. We were unable to find any drivers for your product.

Product sold without warranty: The Virtual Agent is currently unavailable. Download list – Download multiple files at once View, edit and download your entire list of software and drivers here.

Driver Center: Compaq Presario CQ 40 Driver Download For Windows XP, Windows Vista & Windows 7

See your browser’s documentation for specific instructions. This product was sold by a third party. Asia Pacific and Oceania. Technical data is gathered nogebook the products supported by this tool and is used to identify products, provide relevant solutions and automatically update this tool, to improve our products, solutions, services, and your experience as our customer.


Let HP identify any out-of-date or missing drivers and software.

Compaq Presario CQAU Notebook PC | HP® Customer Support

Any warranty support needed would be completed by the reseller that sold the product. Product has been exchanged: Product sold by third party: Would you like to view the product details page for the new product? This product was sold by a reseller.

Please return to the product information page and verify the numbers provided or try again later. This could take up to 3 minutes, depending on your computer and connection speed.