Acer Aspire M3-581T Service Manual page 66

Figure 2-13. DOS Flash
4. In flash BIOS, the message Please do not remove AC Power Source is shown.
NOTE:
NOTE:
If AC power is not connected, the following message (Figure 2-14) is shown.
Figure 2-14. AC Power Warning
NOTE:
NOTE:
Plug in the AC power to continue.
5. Flash is complete when the message Flash Programming Complete is shown.
2-16 System Utilities