Hi everyone.. History: My windows XP on my DESKTOP woudn't go past a certain stage. It gave me an error message... system32/drivers/ntfs.sys is missing or corrupt. It woudn't login to safemode or restore to last known configuration. NOW: I reinstalled windows using the repair option via CD. All is well and I am very greatful that I didn't lose anything! BUT it doesn't recognize my copy of windows as valid! Says "you may be a victim of software counterfieting"..etc. and as a result I can't update windows! I bought my desktop and laptop at the same time. Both are HP and both operate with Windows XP Home. I only had one "Windows XP " CD which I think came with my laptop. (The one I used to repair windows on my desktop) I have both product keys but what do I do now???