will lnot start up

My Win XP was shut down wrong, and now it will not start up.  When I boot up, it gives a message to use the last good config. or start in safe mode.  It will not do either.  At the end of the countdown to go into start normally, it just freezes.  What can I do?

boot to your windows xp cd,
go to repair console
at the command prompt type in
chkdsk

see if that works.

Thanks for the help, but I had to reinstall windows.  I tried the repair thing before I came here, and it would not work.  I appreciate your trying, tho...