Hardware hit from lightning so new hd and video card and start over. All goes well with install using a slipstreamed XP-Pro SP3 disk but I notice it never asks for the Product Key during install yet it Activates itself during one of the boots and I think little of it until ... During the updates which followed (100+!!!) I notice Windows Defender doesn't seem to run or leave itself installed. As it is running on my laptop figured I just download it. When I run it, it wants to first do the Genuine Advantage bs which I let it, at which time it says "bogus". Ugh, guess got to somehow enter in the key I'm looking at on the guaranteed genuine Compaq label still attached to the side of the case. Thinking docs indicate straightforward, invalidte the "timer" in the registry, do the Therefore do the "%systemroot%\system32\oobe\msoobe.exe /a" thingie and go to enter the key. It's not accepted! It's a XP Pro install andI'm trying to enter a REAL XP key. What's the problem? Haven't rebooted since then but willing to bet there'll be some bs when it needs to. P.S. System Properties/ General tab shows blank lines and has since install?