|mmm - You say it goes through POST (boot); any beeps - and if so what are they (number etc.)?|
Have you ensured that the graphics card/adapter is securely installed; and also perhaps tried another cable - and using (at this stage) a simple dvi o/p?
And am I missing somethings here - in your list of components...?
Don't appear to have a hard drive listed?
You appear to have listed:
The actual case; memory; cpu; cd/dvd burner; motherboard; graphics card/adapter... - but no hard drive?