PACKARD BELL LJ77 - Manual (Page 135)

Chapter 3 125
9. Replace the nine screws in the upper cover as shown.
NOTE: The securing screws differ in size: Red callout—M2.5*5, Blue callout—M2.5*3.
10. Turn the computer over and replace the thirteen screws as shown.
NOTE: The securing screws differ in size: Red callout—M2.5*8, Green callout—M2.5*5, Blue callout—M2.5*3.