Restartyour Acer Aspire 4920 and press the "F2" key repeatedly when the computer begins to boot up. This will open the BIOS Setup Utility. Navigate the BIOS Setup Utility menus using your arrow keys. Look for a menu labeled "Advanced." Open the "Advanced" menu by pressing the "Enter" key. Look for a submenu labeled "Video4 Reboot to BIOS, pressing F2 at boot, then press F9 to load default and F10 to save and exit. 5) plug your USB flash drive and at boot press F12 (if F12 doesn't work, see if it auto-recognise the USB flash drive or press F2 to enter BIOS and enable F12 boot menu under BOOT tab), choose the USB flash drive as bootable device. I'm not an Acer
Way1. Hold Shift key and click Restart (Easiest) Click Start > Power Button. Then hold Shift key meantime click Restart. Wait for seconds then you will access to Boot Options Menu. Way 2. Access to Boot Options Menu via Run dialog menu. 1) Open the Run dialog box by pressing Win + R (Windows logo key and R key) at the same time.
Openthe notebook and press quickly F2 to enter the BIOS. Under the MAIN menu, enable the F12 Boot Menu option. Under the BOOT menu, select Legacy boot and press F10 Save & Exit. While the notebook is rebooting, press F2 again to enter the BIOS. Under the BOOT menu, select as your first boot option the USB HDD stick (your USB