I use XP pro, and I was trying to block access to the C:\
drive to all users but myself. Once I had done this, and
logged off, I could not log on again. When I tried to
restart, there was a screen that read "autochk program not
found - skipping AUTOCHECK" which then bounced to a blue
screen that read: STOP: c000021a {Fatal System Error} The
session Manager Initialization system process terminated
unexpectedly with a status of 0xc0000022 (0x00000000
0x00000000). Then, the system shuts down, and the same
thing occurs everytime I attemp to bootup again. This
seems like a pretty serious problem, any help is much
appreciated. Thanks.