Some Dells come with such and we have MEMTEST86, your hard disk maker issues a test software but nothing comprehensive. Is there an issue you need to look into?
Bob
Does anyone know a diagnostic software that I can get that checks all the hardware to make sure its running properly. Or is there some kind of a test like this built into the OS that I dont know about?

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic