Microsoft's Windows Anytime Upgrade (WAU) program (in English) allows you to upgrade the Windows 7 operating system on a computer to another version of Windows 7. This requires purchase of a product upgrade key from Microsoft.
- Microsoft supports the new version of the Windows software under its terms. HP continues to support hardware under the terms of the warranty period.
- HP or Compaq System Recovery restores the original version of Windows that came with the computer. Your recovered computer will no longer have the upgraded version of Windows.
If you have questions about Microsoft's WAU program including eligibility or questions regarding installation problems, see Microsoft Help and Support (in English).