Everyone knows pressing during boot gets you into the BIOS. But did you know your 5749 has a hidden "Advanced" tab?
its standard BIOS (InsydeH2O) is notably restrictive, which led to a community of users seeking "exclusive" or "unlocked" BIOS versions to access hidden settings like Virtualization Technology (VT) BIOS & Software Review Standard BIOS (InsydeH2O): The factory BIOS (versions such as acer aspire 5749 bios exclusive
If a password is set and forgotten, you may need to remove the CMOS battery for 10 minutes to reset it. Conclusion Everyone knows pressing during boot gets you into the BIOS