Minimum hardware requirements to get live display?

[pellel]

Just wonder which are the necessary hardware components to get any kind of image/text on the display. I have figured these out myself, but what more do I need?
Mobo, RAM, CPU, PSU/case, display.

Do I need a video adapter when I just want to test if the display and other hardware works?
Do I need a hard drive?
Anything else?

 

[folken]

If you want to just make something appear on a monitor you need a motherboard, cpu, ram, video card, psu, monitor.

<A HREF="http://www.folken.net/myrig.htm" target="_new">My precious...</A>

 

[Crashman]

And sometimes a keyboard...I've heard some boards won't respond if they don't detect a keyboard, but that was a few years ago.

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