Acer Aspire V3-571G Service Manual page 69

Remove the battery.
2.
Plug the USB flash disk.
3.
Press and hold <Fn> and <Esc>, and then plug the AC adapter.
4.
Press the Power button to start the Crisis Utility.
5.
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Figure 2:34. Remove the Battery
Figure 2:35. Plug the USB Flash Disk
Figure 2:36. Hold Down <Fn> + <Esc>
System Utilities