Borrow a Windows XP CD from a friend, relative or neighbour.
Remember it must be of the same edition that matches your Product Code, i.e. Home or Professional. Also bear in mind that you will have to download some drivers from the manufacturer’s web site.
To install XP, boot from the CD. You may have to change the first boot device to CD in the BIOS. To do this, when you switch on look for a Setup message indicating which key to
start tapping, F2 and Delete are commonly used. The message is not displayed for very long and it you miss it, you will have to restart the computer. In the BIOS, look for a section that contains the boot sequence, change it to CD, save it and let the computer
reboot.
The install sequence is to reply to the message Press any key to boot from CD, then press Enter to Set up Windows, press F8 to accept EULA, delete the partition, press Enter, type L to confirm delete, type C to create
a partition, choose (Quick) format. Then the installation starts and will reboot so ignore the message to Press any key to boot from CD.
Now the actual install will start and take about 30 minutes. Lastly, download all the missing Microsoft updates.