Booting Ubuntu from USB

[Zoeeyy97]

Hello,
I have an 8GB USB with Ubuntu saved on it. I went to the BIOS and changed the boot sequence, yet when I restarted the laptop it didnt pick up my USB and loaded as usual. So I manually choose to boot from my USB. It picked up that my USB was connected but then when I selected it, it responded as if my USB was empty. Currently my boot sequence is:
UEFI Boot Order
- USB CD/DVD ROM Drive
- USB Diskette on Key/USB Hard Disk
- Internal CD/DVD ROM Drive
- OS Boot Manager
- ! Network Adapter

Legacy Boot Order
- Notebook Hard Drive
- Internal CD/DVD ROM Drive
- USB Diskette on Key/USB Hard Disk
- USB CD/DVD ROM Drive
- ! Network Adapter

For some reason the Network Adapter has an exclamation mark. Currently my 'Internal Network Adapter Boot' is Disabled, but when I enable it the exclamation mark next to Network Adapter goes away.

 

[Kjwinden]

http://www.ubuntu.com/download/help/create-a-usb-stick-on-windows

This might help.