I have a Desktop Dell W3503, I have a bit of knowledge of computers. I am trying to install linux on my computer but after every installation on any favor of linux; I get one of 2 things when I boot from Hard Drive. A black screen with a blinking underscore for when I type it beeps at me once per key stroke, or a black screen with a blinking underscore that I can type in but it will do nothing. I have checked to see if plugged in and reseated my cords, RAM, Hard Drive, and CD/DVD Drive. I also have spare RAM and tried them.