Lsass.exe: How can I delete it without being in Windows?

Unfortunately, my poor computer have become afflicted by the lsass.exe virus. It's not allowing me into Windows, through normal means or safe mode, last settings that worked, etc. So, I need some sort of way I can delete it through command prompt.

I've tried the Windows repair function using the original Windows XP CD, but it needs some sort of administrator password, of which I've either forgotton or no one ever told me.

Any help would be much appreciated. Thanks so much.

Lsass.exe: How can I delete it without being in Windows?anti virus software

Let me tell you something.Isass.exe is a windows authentication file

and not a virus.It may have become infected.Your computer may not work without it.If possible, just format your operating system drive and reinstall windows(I also had a similar problem a few months ago).Good Luck!