Computer starts booting after 3rd time.

[nemanja694]

So yea as title say my computer starts booting at 3rd time.First 2 times power led turns on and off after 1 seconds,after like 3 seconds repeats the same thing.At 3rd time boots up and works fine.
I have Biostar (I know it is bad mbo brand) TB85,I5 4460,GTX 1050Ti,Xilence 730w PSU.

 

[ragnar-gd]

The brand is not that important here. Check with spare PSU (400W is enough), as this is the most probable culprit.

 

[nemanja694]

I tried but its same only when is coold startup.When i shutdown pc and try to turn on after 5 minutes i get the same thing.