Hi guys, explorer.exe has generated errors............ First time I've ever had this problem where I can't boot up at all, even after the above error.. Basically, I was trying to install an HP Scanjet 2400 via the HP website. I downloaded the installation files (huge mb!!) and try as I may, it would not play along. Anyways, I decided to forget it and go buy a diff scanner. I uninstalled it, deleted all useless files and then cleaned up the registry with various tools with which I've had no problems before - Crap Cleaner, Find Junk Files, RegSeeker, Free Windows Registry Repair. Where relevant, I have restored all cleanings etc except I got an error something like can't write to/or read Registry. I have a feeling I may have deleted something from the registry arrrgggghhhhh! I ran the System File Checker and that requests I insert the win 2000 pro installation cd, er, I would but I dunno where it is, I cant find it, it has been that long since I used it!! On the Windows support website an answer to a query there of similar nature was to download and reinstall the SP4. So, I really need some help here to get me booting up again guys and would much appreciate any help. TIA