Having trouble building my first PC on m

Since this is your first, check the basics. Is your power switch on the front of your case connected to the mobo? Is the power cord plugged into a good outlet? Unplug everything from the mobo except cpu&fan, ram, vga, pwr and try it.

After checking the voltage with another outlet and the above postings connections and power switch on the correct voltage. Once power is applied did you notice the led light on the motherboard on either yellow or green or not on at all? Have you replaced the power supply to determine in power supp bad? Is there an extra processor and is it supported by the mobo? Does it try to post? Fans spinning? Hit back with answers to better assist you.

If you arn't getting any power on when you attempt to urn on the unit I would suggest that you havent installed the connectors from the front pannel of the case onto the M'Board correctly and that when you push the on button it is connected to a LEDor something else but not the power connector.

Unplug everything again and this time very carefully with your M'Board book in your hand reconnect these plugs to the header strip on the M'Board. I think that this will cure your problem.