I created a Ubuntu USB using rufus so that i can install Ubuntu on my Acer One 10 laptop/tablet convertible. The first time I booted using the USB i tried Ubuntu without installing to make sure it worked correctly, and it did, except for the keyboard. Then i shut it down, and booted it back up to actually install Ubuntu; the keyboard still didn't work, so i got up to plug in a separate keyboard, and I dropped it and the USB came out in the middle of the installation process. Now I can't get past the grub menu. I have tried it with 2 other USB's, and my sister's computer (same model), re-downloaded the ISO and re-imaged all three USB's several times, trying to troubleshoot the issue. The screen still just goes black after selecting an option from the grub menu.