: Press F2 repeatedly during the initial Acer splash screen.
Plug in your AC adapter. Never flash a BIOS on battery power. acer aspire 5749 bios exclusive
The InsydeH2O BIOS on many Acer models includes hidden "Advanced" and "Power" tabs. You can attempt to unlock these without a modified ROM using specific key sequences: : Press F2 repeatedly during the initial Acer splash screen
Need help with a specific BIOS setting, BIOS password removal, or updating instructions? Provide the exact issue and whether you’re using Windows or Linux. BIOS password removal