

To test it out, insert the USB into a different computer, start it up and press the special key to take you to the BIOS Setup Utility menu. If you are 100% sure that the USB is bootable, then this is likely the problem. USB Boot Not Available: If the bootable USB still doesn't appear in BIOS, it's possible that the computer doesn't support a USB boot. In that case, you will need to find another USB drive and go to Microsoft's download page for the Windows 10 ISO and use burn Windows ISO to USB. If the drive is not bootable, that's the reason it doesn't appear in BIOS. If your USB is bootable, you should be able to see this on your screen: Choose "Run LiveUSB" next to "Start directly from a USB drive." In the next page, select your USB, click OK and click Yes on the next page. Plug in your USB and Run MobaLiveCD as administrator by right-clicking on the download. There's no need to install it, so you can just run it from the download location once you get the tool. To check this, you can use a free tool like MobaLiveCD. USB Not Bootable : First, check if the USB drive is, in fact, bootable. It could mean one of several things: either the USB media is corrupted, it's not bootable or your computer itself doesn't support USB boot. One of the most common errors is that the USB drive is not an option when you go to the BIOS Setup Utility. So you finally created a Windows 10 bootable USB but the computer can't boot from it? What could be the problem and how to fix? In this post, we list all the potential issues and fix to help you out.

But in nowadays, USB is a much better chocie as CD/DVD drive is not available on most of laptops and desktops. Generally, you can make a Windows 10 installation media with CD, DVD or USB. Now, Windows 10 is more preferred desktop because of the new features it brings up to. There are a few scenario that we need to boot a Windows installation/rescue disk on a computer in order to fix the issues.
