NEC Versa E3100 Disassembly Manual page 19

2. Turn the system over and remove all the 14 screws as shown on Fig 21
M2.5X6.5 Black
Fig. 21 Remove all the 14 screws
3. Turn the system back; slowly remove the top cover assembly as shown in Fig 22.
Fig. 22 Removing the screws retaining the Heat Plate
NEC VERSA E3100 Disassembly Manual
Page 19