I use regedit deleted some "dangeres entry" from registry after I run Spyhunter and some other Noadware that dowloaded from web. Then my PC acting bad. I try to restore registry but no help. I applied SP4 it deleted some file and copied some thing and rebot but can't finish successfully. I did use original Win2K CD to do in line repair, no use.
Now the status is the PC boot very slow, checking security setting takes 20 min. Finally it boot up in near one hour. At first I thought it is dead, I turn off the power when I saw check security seeting for more than 20 min.
Later I found it will boot after one hour or so, but you can't go to internet, it say "can't dial". And all the other application does not work, may be I have no patient to wait another hour!
I installed WIndows XP pro on another HD as "E", the original Windows 2000 HD is "C", (by the way how to make DVD/CD drive as "Z"?) the XP boot and works fine, So it is not memory or any hardware problem.
My question is how to repair the Windows 2000 and not affect the data on it?
Since boot to Windows 2000 is too slow, can I boot to new Windows XP HD and repair windows 2000 HD?