I double checked every connector is in place where they should be. I have green led light burning on MOBO and graphics card which I have had when my computer booted normally
all power plugs like the atx12v connector in place? 8 pins
check the motherboard's CPU socket if pins are bent.
any beeps? or led debug code?
I had wrong connection at my eatx12v connector and that was the problem, now working fine with this new cpu cooler. Thanks for your help, you pointed me to right direction
glad to help, but how exactly did you connect it wrong?
There was for some reason 6 pin instead of 8 pin, I think i had missed it somehow when I installed new power supply. I had googled that 6 pin is enough but it needed that 8 pin so it was pure human error