If you know the windows safe mode and the usefulness of safe mode,then you can manage the undeletable file or folder in Windows XP easily.
It's inevitable that Windows XP will sooner or later prevent you from deleting a certain file or folder. Typically an unsuccessful attempt to delete a file or folder in use causes an error message that says the files cannot be deleted because they are currently in use. So, After we know the windows safe mode, don't be worried, follow these easy steps and you will be free of the pesky offender in no time.
if you forgot your Windows password and couldnt login Windows safe mode, you could use some Windows password recovery tool.
Excepting for reformatting Windows to delete Windows stubborn file, all of us dont want do this, then follow the steps to delete a stubborn file:
1. Turn on your computer and immediately press the F8 key on your keyboard several times until the "Advanced Options Menu" screen appears.
2. Use the up or down arrows on your keyboard to select "Safe Mode," Press the Enter key.
3. Windows will boot and load only the vital system services. Once loaded you will see the Welcome Screen, click the icon for the account labeled "Administrator" or an account that has administrative privileges, and then type your password (if you have one).
4. A message alerts you that Windows is running in Safe Mode. To proceed, click the Yes button.
5. You can use Safe Mode in much the same way that you would use the normal Windows mode, except while in safe mode some functions and programs may not work as they normally would. This is called Windows Diagnostic Mode.
6. Locate the problem file or folder, and then right click on the offender to simply delete it.
7. Restart your computer and log into your normal user account.
The undeletable file or folder is history! Try,just like this.