Possible Duplicate:
Can’t boot from liveUSB when trying to install it alongside Windows 7
I know this is my 3rd question today, but every other question of mine has been so nicely answered here.. so why not?
Quick story quick, I get Ubuntu on 4gb USB then run the the Ubuntu thing and it restarts my computer so I can boot with USB. I do so, and after I press f12 then go down to USB it says boot error when i press it.