Here i am going tell you a new trick by which use you change your Windows Xp Home Edition to Windows Xp Professional Edition.It is very simple and it do not require any Re-Installation by Windows OS CD.
Here i am show you a picture of my Windows Xp Home where you clear fully see in the System Properties it show Home Edition...
In first step,you go to 'Run' and write regedit and press ok.A new window open where you see a tree in left side of window,here you follow path which write below...
HKEY_LOCAL_MACHINE/SYSTEM/ControlSet00X/Control/ProductOptions
Remember here "ControlSet00X" be the Highest Numbered out of more than one.
All of this when you enter then you see right side of window like given below...
In above picture i am red line a Key,just delete it which name is "ProductSuite"
And make a New DWORD key by right click on window and given name "brand" see below picture...
Given the value of the new DWORD Key is 0.
After complete above work,now restart your system,when your system start boot before come of Xp Screen,press F8 which show you XP's boot menu.
Here you see screen like given below picture.Select the option Which shown in the picture...
When your Windows start work then go to My Computer Properties where you see below picture...
Which means you change Windows Xp Home Edition to Pro Edition
