Linux Ubuntu

Hi all thanks in advance. I just installed Linux Ubuntu, and was hoping I could do it dual boot, so for safety I installed it on my external hdd via a usb iso install... Everything went grand no issues. Updated it and everything after install. Now when I restart or power off and on it just keeps...

I'm building a PC with 16gb ram and I found these two sets of 2 x 8gb ram: http://www.pcsystems.ie/components/memory/crucial-16gb-pc3-12800-kit- at €145.79 and Corsair 2 x 8gb at €170.47 Obviously it's a pretty big price difference. They both have virtually the exact same specs (from what I...