New computer wont turn on
okay i've had the computer for about 3 weeks now, well i built it myself, this is the second time i've built a computer and im confident i never stuff it up. Well with the second computer i built when i first put it together, the wires had been loose and it kept turning off when the ground was shaken then one day when i was going to fix it, my brother turned the computer on when my hand was in the computer fidling with it and it fried.
So what i did was replace both the motherboard and the PSU and replugged everything back to normal, but this time the computer didnt turn on at all
any suggestions of what to do now ?