My experience with Linux OS's: newbie.
I got a new Acer TravelMate TMB113-M-323a4G50akk netbook, Intel i3 processor, 4gb sdram, 500gb HDD, no optical disc mechanic.
It had Linpus OS installed on it from the factory. I downloaded UNebootin to my desktop Windows 7 PC. Then I torrented down Xubuntu 13.04 64bit .iso and using UNe, I created a Live USB on a 2GB USB. I put the USB into the netbook. Switched on. Went into BIOS with F2, changed things around in boot order so it will load the USB. Loaded the "Try Xubuntu without installation" and had a look. Liked it so I clicked on the "Install Xubuntu" icon on the desktop. Formated the disk and the previous OS. Installed Xubuntu. All fine still.
Then I was normally restarted and clicked F2 to get into BIOS and default it back to original settinga.. Put the Live USB stick out. Restarted again..
..and after the Acer emblem went away this appeared:
..if I press any key the message just repeats itself..even if I put the Live USB back.Broadcom UNDI PXE-2.1 v15.0.11
Copyright (C) 200-2011 Broadcom Corporation
All rights reserved.
PXE-E61: Media test failure, check cable
PXE-M0F: Exiting Broadcom PXE ROM.
No bootable device -- insert boot disk and press any key