Mmmk.
So, I turned off my computer, waited until I could boot it again and pressed delete a bunch of times until I got into what I imagine was the BIOs menu
I went into advanced BIOs options, and went to boot order, only to find out there are 3 seperate menus. Removable Disk, Harddisk(or something), and 1 I cant remember. I went into removable disk, and put A: at the top. I shut the computer off, waited till it would boot, and it still booted normally. What did I do wrong?