My computer crashed this morning. It is a Sony Vaio that, when purchased 4 years ago, already had Windows XP Home Edition as its software. When I tried to start up Windows, it had an error message that stated "c:\windows\system32\config\system." I went through numerous amounts of Windows and other helping computer websites and I eventually replaced some of the damaged system32 files with some from the recovery folder. I did this using the recovery console (pressing R to help recover). I was sent to a 'c:\>' prompt where I did most of the routing. After that happened, a new error appeared when I tried to open my computer in Safe Mode. It would load some of the necessary files, and would stop at "xxxxxxxxxxxx:windows\system32\drivers\agp440.sys" and edger to get this problem fixed, I returned to the recovery console and now it is asking for an administrative password. It did not ask me for this password 3 hours ago when I was working in recovery mode. I tried entering no password, but I get an error message that says "invalid password, please re-enter." I have been the soul owner of this computer and I have never set an administrative password. Can you please help me get passed this password so I can continue to try to return my computer to it's old status? Thank you so much for any help.