Acer AO756 Service Manual page 70

As <Fn> and <Esc> keys are pressed, press the Power button to turn on the target machine.
4.
Wait for 3~5 seconds to make sure the system fan is in full speed before releasing <Fn> and
<Esc> keys.
Wait for 3~5 minutes for the system to complete the crisis operation.
5.
NOTE:
If the waiting time takes more than 5 minutes, the system recovery might have failed. Please
check the following:
BIOS filename (i.e. BIOS.fd) is correct on the USB flash Crisis disk.
•
Pull out the AC adapter and remove the battery to reset the embedded controller status
•
Repeat steps 1~5.
•
2-29
Figure 2:43. Press the Power Button
System Utilities