Problems of Changing the Boot Screen !!

If you download a hacked system file with a new boot screen and replace the old file on your computer, after you restart, you may find that your computer will not start and will give you a nice error message.
C:\Windows\System32\ntoskrnl.exe is missing or corrupt
Missing or corrupt?
This is the most common problem that users experience when trying to change their boot screen using the file swap technique.
Users that get this message, or any similar error message, are receiving it because they replaced their system file with a file that is not compatible with their version of Windows XP.
Windows XP was released in many different languages for different parts of the world. Each language version of XP has a slightly different version of code. Additionally, Microsoft continuously releases software update patches to update the code of the system files such as the monthly security updates and almost yearly service packs. All of these factors result in several different versions of the boot screen system file floating around on the Web.
You could find a boot screen file that was made from a hacked system file from the German version of Windows XP. Or more commonly, you could find a boot screen that was made from a hacked file from the original version of Windows XP.When you try to install that boot screen on a computer that, for example, has Service Pack 2 installed on the English version of XP, you will have problems.
Windows XP will only work with a specific version of the system file that contains the boot screen.
This arrangement complicates the change of the boot screen with the common file swap technique. It will do so because users will have difficulty telling on what version of Windows XP a particular boot screen that is distributed on the Web will work. Users have to be aware of more than just the version problem. Because you are downloading a hacked version of a critical system file that is executed during the boot sequence, you could possibly download a version that someone modified and in which she /he put some variation of malicious code that could harm your computer..!!