ok I looked into connecting the monitor to the videocard and unfortunately the cable is not comptiable with the integrated video. I'll look into if there's an adaptor or a new cable which will fit both the monitor and the integrated video.
I also tried removing RAMs, leaving one behind. I tried that in both first and second slots - no luck.
I read somewhere some components have switches you have to toggle in order to get them to work so I checked for that, I couldn't find such switch on the water cooler. It did have a button for 3 different fan speeds - I tried pressing that, no luck.
I'm wondering perhaps I didn't seat the cooler properly on the CPU - I used the pre-installed thermal glue. I read online how some people removed that glue and applied fresh coat of glue. Also I read about how some CPUs are designed to not activate if the cooler unit isn't attached to the CPU properly to prevent the CPU being fried. I don't know if that's the case with my CPU, will have research that. I'm also mulling the idea of removing the H-80 and using the stock cooler to see if that makes any difference.
Oh yeah, by the way I doublechecked power supply cables and those seem to be firmly set in their connectors.