The laptop didn't come with any
drivers at all...nothing but the computer itself.
I'm having trouble following the instructions in the above link, because my first step appears to be that I need to change the boot priority.
I am not being given a screen like it talks about in step # 1 because the first thing that appears is that "multi-boot screen" I mentioned above, where it asks me to choose which OS I want to utilize -- the one in D or the one in C.