Boot from USB not working - Acer Aspire E1-522

Solution 1:

I do not know if you have finally installed Windows 7, but I had the same issue and I resolved it this way:

1. Open the notebook and press quickly F2 to enter the BIOS.
2. Under the MAIN menu, enable the F12 Boot Menu option.
3. Under the BOOT menu, select Legacy boot and press F10 Save & Exit.
4. While the notebook is rebooting, press F2 again to enter the BIOS.
5. Under the BOOT menu, select as your first boot option the USB HDD stick (your USB stick).
6. Press F10 Save & Exit.

or

After you rebooted at step 3, you can press F12 and select from there your boot option (USB).

It worked for me, I found out that the problem was the USB 3 port. Maybe if I put it in the USB 2 ports I wouldn't need all these steps.