When changing my boot screen, I replaced my ntoskrnl.exe with one that was apparently corrupted. Now windows won't start because it can't display the damn load dialogue. I also don't have a Windows XP CD because this is on my laptop which came with it pre-loaded; all I have is a set of recovery CDs which would just format and reset everything which I really don't want to have to do. Does anyone know how I can get around this problem and restore the file?