Computer won't send any information to monitors.

[Joshua12345]

I had my computer working for several weeks then one day it wouldn't turn on. I messed with some stuff and everything would turn on but nothing to my monitors. I tried new ram, a new power supply, vga dvi and HDMI chords to two different monitors. I send my mother board in back to asus two times and they say it's fine. I've tried everything with and without the gpu installed. Nothing goes to my monitors. The mother board is an ASUS z170-a. I've tried removing the mother board battery and everything.

 

[DRagor]

Full list of components?