Ever had problems while installing XP SP2 on OEM machine?

If you ever hit the problem that your WinXP SP2 installation hangs while in the installation process (for example while “Checking Product Key” or something alike) try this:

1) Go to the CMD prompt.
2) Then type cd \windows\inf and make sure we are in that directory.
3) Then type ren oem*.inf oem*.old, it will go back to the prompt after giving you some error (Do not worry about it)
4) Then type ren oem*.pnf oem*.old1, it will go back to the prompt after giving you some error (Do not worry about it)
5) Then goto start – run – type c:\windows\inf and you will see the files in the folder.
6) Then find the file by name INFCACHE.1 and take a backup of it to desktop (by copying it to desktop) and delete the INFCACHE.1 from c:\windows\inf.
7) Close all windows and reboot the computer to safe mode and start the installation of SP2 and it should go fine.