Modern UEFI "Class 3" firmware doesn't support the legacy bootloader (NTLDR) used by XP.
hardware, which completely removes the Compatibility Support Module (CSM). Without CSM, the OS cannot execute the 16-bit interrupts required for video output and disk access during the boot process. Furthermore, modern ACPI (Advanced Configuration and Power Interface) install windows xp on uefi system 2021
eBay, Craigslist, recycling centers. Search for "Dell Optiplex 7010" or "HP Compaq 8300" – they are cheap and XP-compatible. Modern UEFI "Class 3" firmware doesn't support the