Why isn't my computor booting up completely?

1) PUSH START BUTTON ON KEYBOARD

2) SCREEN COMES ON

3) HAPPY FACE ICON COMES ON

4) WELCOME TO MACINTOSH LABEL COMES ON THEN GOES OFF

5) TOP OF SCREEN MENU COME ON AND STAYS.

( FILE-EDIT-VIEW-LABEL-SPECIAL)

6) HARD DISK ICON COMES ON WITH LABEL "HARD DISK"

7) TRASH ICON COMES ON , NO LABEL.

8) CLOCK COMES ON REPLACING CURSOR ARROW

9) CAN MOVE CURSOR (CLOCK ICON) WITH MOUSE

10 ) NOTHING ELSE WILL COME ON DESK TOP OR WILL WORK

11) REPLACED BOTH BATTERIES

12) ZAPPED PARAMETERS

13) ALL MY PEOPLE LIKE THIS COMPUTOR FOR OUR CAD CAM

WORK BETTER THAN OUR OTHER THREE SYSTEMS.

14) SUGGESTIONS ?