JSI Tip 10089. You are prompted to activate Windows every time you restart your computer?

NOTE: See tip 9836 » How can I backup / restore Windows XP product activation?

Microsoft Knowledge Base Article 312295 contains the following description:

After you successfully install and activate Windows XP, you may be prompted to activate Windows every time you restart your computer. This issue can occur if a Windows Product Activation "crack" or "hack" that is named Reset was installed on the...