Acer Aspire V5-572, Service Manual, Page: 211 / 456

Jumper and Connector Locations 5-7
10. In DOS mode, input unlockHD XXXXXXXX (Where XXXXXXXX is the backdoor key;
example here is 93653358). The exe will generate an backdoor password(example
here is 22731998).
Figure 5-8. Getting backdoor password
11. Power on the system with the locked supervisor password.
12. Press
F2
during boot to enter
BIOS Setup Menu
.
13. Under
Security
, select
Set Supervisor Password
and input the backdoor
password (example here is 22731998) to clear the
Supervisor
password.
Figure 5-9. Enter backdoor Password.
NOTE: NOTE :
If BIOS setup menu item ‘
Supervisor Password Is
’ and ‘
User Password Is
’
is set to
Set
, and ‘
Password on Boot
’ is set to
Enabled
, then Crisis Recovery disc
must be used.