i have a Dell Inspiron 9400 Notebook (running on Windows XP Home Edition),and i went to start it up and CHKDSK came up and took about 10 min. to finish and then my user account never came up,so i shut it off by the button and went into Safe Mode and the same thing happened so i turned it off again then i tried the last good configuration,then CHKDSK came up and then my user account came up so i typed my password then after a few seconds a blue screen pops up and says: STOP:c00000021a {Fatal System Error} The Windows subsystem process terminated unexpectedly with a status of 0x c0000006 (0x7c921a9d 0x0069f0e4).The system has been shut down.....Ok so i went and did research online and a few people were complaining about it and were able to fix this by reinstalling the system.But one problem:My computer didnt come with a Windows XP disk.Please Help!!!