Gigabyte F2A88X-D3H MB
That's about all that matters for this problem IMHO
Because, while the MB powers up, the fans power up from the mb, the HDD spins up, the sscreen does not.
Screen on other box--check
screen from other other box--check
Disconnect all extraneous hardware and boot from pendrive--check
I get nothing on the screen except if I turn it off and back on I get a "no signal" message, which I assume means that it is getting nothing. These are both VGA monitors BTW
My first trhought was that it was an MB problem, but now am wondering if there is an APU problem.