Hmmm .. I wonder, I have 2 custom Kernel files which I replace the existing ones with, I'll remake the ISO without doing this and see if that fixes the problem. Plasma Yup that was it, so thanks for the pointer! Though the question now is how do I integrate my custom Kernel files that I've done for years? I edited the SP3 originals with boot editor, and then ran ModifyPE on them, and re-packed them. This has worked for everything since I started using nLite. Any ideas? Or should i just try modifying them again! Plasma