Note: This is not a complete conversion. After conversion, some features in windows xp professional are still not available such as remote desktop, Group Policy Editor (GPedit) utility tools, etc.
To convert and upgrade Windows XP Home to Windows XP Professional, please follow the steps below:
1. Open Registry Editor (regedit).
2. Navigate to
HKEY_LOCAL_MACHINE/SYSTEM/ControlSet00X/Control/ProductOptions
where ControlSet00X is the one with the highest number.
3. Delete the ProductSuite registry key.
4. Then, create a new DWORD value and named it as Brand.
5. Set the "Brand" value data as 0.
6. Reboot the system.
7. On boot up after the BIOS screen, press F8 to display Windows XP Startup Menu.
8. Choose Last Known Good Configuration (LNG) and hit Enter.
Windows XP will start up as usual. After logging, check the system properties to verify that it's now Windows XP Professional.
