Can I install Ubuntu with a new blank Hard Drive?

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http://askubuntu.com – I am planning to install a new blank hard drive on my computer but i cannot find the windows iso file i need(windows 7 starter) so can i just install ubuntu instead when i put the new hard drive in? i dont have a cd/dvd rom reader on my laptop. i can only install from usb stick. and no windows 7 starter's iso file cannot be found ANYWHERE! windows 7 starter is only preinstalled in computers, and yes i already contacted microsoft and they disagreed to give me it. (HowTos)