WinVer-Insider-Preview-and-Pro-Licenses.jpg' alt='Check If Windows Xp Product Key Is Valid' title='Check If Windows Xp Product Key Is Valid' />What do I do if my Windows product key isnt accepted Thanks for the comments Marnok and DJChris this process helped. After successfully completing these steps, however, I decided to try the following for kicks Installed Windows 7 Pro 6. Upgrade disc by selecting Custom Install when prompted. Deleted all disk partitions when given the chance so as to completely start fresh and then clicked Next to allow the default partition creation. Left the Product Code field and Activate checkbox blank when prompted. How To Download Files From A Website Using Ftp With Internet. Once Windows 7 had finished installing I was brought to the Desktop, here is where I deviated from the previous suggested comments. Instead of reinstalling Windows 7 as an upgrade taking another 3. I simply launched the System applet Control PanelAll Control Panel ItemsSystem. From here, I launched the Change product key link under the Windows activation section, entered my Windows 7 Pro product code and followed the prompts to Activate. After you finish installing the Windows XP operating system on a PC computer, you will be prompted to activate your copy of the software. However, on occasion, you. Done this instructional deviation took less than 5 minutes and accomplishes the same goal without the reinstall. Note I was previously running Windows XP Pro 3. Windows 7 Pro 6. 4 bit. These instructions worked seemlesslyIf you lost, cannot retrieve or forgot where you had stored the product key of your Windows 8. Windows 8 or Windows 7 OS, do not despair. I would like to show you a. How to Clean Install Windows XP. A Windows clean install is recommended when an upgrade to XP either fails or is not the best installation choice. It ensures that. Backing Up and Restoring the Windows XP Registry. It wasnt very long after I installed XP that I was messing around with the registry. I suspect youre probably. Product Activation was first introduced into the Windows family with the release of Windows XP in 2001. Activation pairs your product key with your computer.