HP PAVILION DV3 - Manual (Page 86)

Phillips PM2.5×4.0 screw
Color Quantity Length Thread Head diameter
Silver 8 4.0 mm 2.5 mm 4.5 mm
Where used: Two screws that secure the hard drive to the computer
Where used: One screw that secures the power button board to the switch cover
78 Chapter 7 Screw listing