There are not any free activation keys for Windows XP professional but there are three activation keys for Windows XP home edition SP3 which are as follows:
Windows XP Home:BJXGH-4TG7P-F9PRP-K6FJD-JQMPM.
Windows XP Home OEM for Dell PC:FP2TC-MJ2CP-32J8T-FP3BY-RW6K6. Microsoft Windows XP Home : CD Key : KQXXH-YW4QM-B84W8-296FX-6XRDW. To perform a clean installation of Windows XP, follow these steps:
1.Back up all important information before you perform a clean installation of Windows XP. Save the backup to an external location, such as a CD or external hard disk.
2.Start your computer from the Windows XP CD. To do this, insert the Windows XP CD into your CD drive or DVD drive, and then restart your computer.
Note, to boot from your Windows XP CD, the BIOS settings on your computer must be configured to do this.
3.When you see the "Press any key to boot from CD" message, press any key to start the computer from the Windows XP CD.
4.At the Welcome to Setup screen, press ENTER to start Windows XP Setup.
5.Read the Microsoft Software License Terms and then press F8.
6.Follow the instructions on the screen to select and format a partition where you want to install Windows XP
7.Follow the instructions on the screen to complete the Windows XP Setup.
If you have successfully installed Windows XP, you are finished.
Windows XP Home:BJXGH-4TG7P-F9PRP-K6FJD-JQMPM.
Windows XP Home OEM for Dell PC:FP2TC-MJ2CP-32J8T-FP3BY-RW6K6. Microsoft Windows XP Home : CD Key : KQXXH-YW4QM-B84W8-296FX-6XRDW. To perform a clean installation of Windows XP, follow these steps:
1.Back up all important information before you perform a clean installation of Windows XP. Save the backup to an external location, such as a CD or external hard disk.
2.Start your computer from the Windows XP CD. To do this, insert the Windows XP CD into your CD drive or DVD drive, and then restart your computer.
Note, to boot from your Windows XP CD, the BIOS settings on your computer must be configured to do this.
3.When you see the "Press any key to boot from CD" message, press any key to start the computer from the Windows XP CD.
4.At the Welcome to Setup screen, press ENTER to start Windows XP Setup.
5.Read the Microsoft Software License Terms and then press F8.
6.Follow the instructions on the screen to select and format a partition where you want to install Windows XP
7.Follow the instructions on the screen to complete the Windows XP Setup.
If you have successfully installed Windows XP, you are finished.