newly built pc will not boot

It could be dozens of reasons. I'll throw 2 more...

Make sure the MB isn't grounding out on the case. AKA extra stand off pins

Connectors all plugged in correctly that control the ON button, Reset, LED lights, etc?

That's the most common cause

Always test motherboards outside the case before builds.

Originally Posted by Lusticles

When I had an HP desktop the motherboard went out just after the warranty was up. So about a year after the purchase.

The buttons would light up, the backlight on the monitor would come on, but otherwise nothing would happen. The sound didn't work either.

Might be the same problem you're having.

I had a lot of photos and work saved on it.

Took it to a repair place hoping that at least they could recover my files but to no avail.

Then the tech was an idiot...the data will still be accessible on the hard drive if the motherboard dies.

Originally Posted by JonJon

It could be dozens of reasons. I'll throw 2 more...

Make sure the MB isn't grounding out on the case. AKA extra stand off pins

Connectors all plugged in correctly that control the ON button, Reset, LED lights, etc?

That's the most common cause

Agreed.

Before RMA'ing it...because that's just going to be a bitch.

Take it all outside the case, put the mobo on a cardboard box and power it up using the on-board power button.

Have you tried to reset/clear the EFI?

Did you try control-alt-delete?????

Originally Posted by braymond141

Power on Self Test is NOT the same thing as standby power to the board. You don't understand.



That is not what I said. What I wrote is correct and applicable to this issue. I was specifically calling you out for incorrect diagnoses from your post referencing CPU, and RAM. These items do not cause a system to not POWER ON, meaning come out of standby power, they are what prevent the computer from completing the POST. You will still get a flicker on of power then immediate system off if the CPU is physically damaged, sometimes the caps will sizzle and smoke.

Standby Power
Power On
POST
Boot

These are all different things. The OP is not getting power on, just standby power. When he says NOTHING happens, that means nothing turns to on. No fans, no lights, nothing... just standby power stuck. See the difference? If the OP has some type of power on (a standy power LED is NOT power on), THEN these components need to be checked.

You're making a ton of assumptions based on things that don't exist in the dude's original post. And no, a mobo WON'T necessarily just turn off if there is a faulty CPU. He never said standby or otherwise... just that there was power.....................

Originally Posted by Owtlaw333

You're making a ton of assumptions based on things that don't exist in the dude's original post. And no, a mobo WON'T necessarily just turn off if there is a faulty CPU. He never said standby or otherwise... just that there was power.....................

I don't really think he's making any kind of assumptions... there is power, but nothing happens except the buttons light up, implying that it's just on standby power.

A good mobo better freaking turn off if their is a faulty CPU, lol.

Originally Posted by Owtlaw333

You're making a ton of assumptions based on things that don't exist in the dude's original post. And no, a mobo WON'T necessarily just turn off if there is a faulty CPU. He never said standby or otherwise... just that there was power.....................

I gave a thorough list of things to check and making corrections to things others said. Go back and read it again. This is based on his description of the issue.

Same kind of BS that happens when people say their car won't start.