Question about AsRock Z270 Pro4

As far as i know, it is not necessary to update the BIOS on this mainboard to use any CPU. Check manufacturer site: http://www.asrock.com/MB...

Did you try your monitor on the HDMI port of your mainboard or your graphics card? Did you set your Monitor to HDMI input in the OSD (Onscreen Display) settings?

i did use this motherboard and my monitor have no signal
i did try everything it's does not work so i return back in to the shop
i use my monitor everyday with HDMI it's work with my laptop
did you try to use this mother board ?

Out of experience I think it's not a problem of a new bios but it's an absolute question of correct bios settings. Check in the manual what you really do need and switch everithing else of you do not need. If this doesn't work you still can try a newer bios or even an older version depending on the operation system you use.