Build and test ... build and test ... as much as possible ...
... Once you have seated the CPU, cooler and RAM, plug in the mobo pwr and the cpu fan pwr and turn it on ... you should hear at least one beep, after awhile .... Check that the cpu and psu fans are spinning, etc.
There is a step-by-step guide, to building, right on a sticky thread at the top of this "NEW BUILD" forum page. Recommended.
= Al =