Question New build wont connect to monitor - please hlp

[Franky.4.Fingers]

Hi,
So I have finished my PC, turned on, everything lights up, fans spinning etc. When i plug my HDMI into the tower, the screen recognises it has been plugged in says no signal and goes back into sleep mode. The monitor is a 1080p 60hz one which I have been using with PLaystation fine with same HDMI cable.
Any help on what I should do next?
My build is

[PCPartPicker Part List](https://pcpartpicker.com/list/bcxJRT)

 

[rgd1101]

monitor connect to the gpu?

 

[Franky.4.Fingers]

Hi, Yes, i changed the Ram slots around (didnt check if they were in correctly) but this solved the fix. The RAM now sit in slots A1 and B1 - does this matter - can they stay in these slots?