PC (new built) shuts down after 1 second. Is my motherboard dead?

[JohnnyCowboy]

Hello everybody and thank you for reading my post.
So here's my problem. My brand new computer starts and it shuts down after one second. I removed everything from the case and I left only the Motherboard and the CPU (and the PSU giving power only to those two). NOTHING CHANGED. I reset my Bios, I tried that PSU on my other PC and it worked. The CPU was from my other PC and it was working with no problems for 8 months. The motherboard is brand new.

And here's the story. Today I just finish building my new PC, when it was almost done I turned it on (no screen connected - no front panel connectors connected to the motherboard - I powered up the PC using the on-motherboard start button) to test the watercooling for about an hour, no (visible) problems yet.
Then I connected the front panel connectors to the motherboard, and I powered up the pc to check something else, But NOT using the case button again I used the on-motherboard start button. No (visible) problems.
This was the last time my PC was working normally. (Or it seemed so)
Next I connected a new fan (BITFENIX SPECTRE 120MM FAN RED LED) to my computer and I also powered up my computer using the case power button. The computer started up and it worked for something less than a minute. Next time I powered it up it shut down after 1 second.

Is it possible that I killed the motherboard by connecting the front panel pin connectors wrong? (I connected them with the letters looking up)
Is it possible that I killed the motherboard by connecting the fan's (BITFENIX SPECTRE 120MM FAN RED LED) led 2 pin connector (named: "FAN LED+-") to a 2 pin connector on my motherboard that is named "OPT_TEMP1"?
I don't think that the watercooling on the CPU and the Motherboard has anything to do with this, right?

I don't know what else to try, please help me, any suggestions are gratefully welcome


UPDATE: I think that I just found something. I touched a chip on the board and it was so hot that I almost burn my finger. It's a chip that says "Republic of Gamers" on it and it's under the South Bridge.
It's the chip I have circled in this photo:
http://imageshack.us/f/571/jc77.jpg/

When the motherboard is connected to the power, it gets so hot that I can't touch it.
Any ideas? What is this chip?


PC Specs:
Intel i5 3570k
Asus Maximus V Formula
Nvidia GTA 680
G.Skill RIPJAWSX 4x4GB 2133Mhz
Corsair TX650M

 

[alexoiu]

Hi, The OPT_Temp pins are for thermal sensors. But connecting led wires to it should not damage the board.
Try taking the board outside the case (if not already) and start it only with CPU and stock CPU fan.
If still shutting down, try borrowing a power supply and test.

 

[SirSub42]

I had a similar problem a while back. Lights and everything came on the motherboard. When I pressed my power button on the front panel my heatsink fan would spin about half a rotation and nothing would go on from there. Ended up being a faulty stick of ram. If you have two, try them individually.

Best of luck and keep us posted. - Sub

 

[JohnnyCowboy]

Hi, The OPT_Temp pins are for thermal sensors. But connecting led wires to it should not damage the board.
Try taking the board outside the case (if not already) and start it only with CPU and stock CPU fan.
If still shutting down, try borrowing a power supply and test.

I just removed everything from the case, and I even unscrewed the motherboard from the base (it's not touching anything). I reset the bio (I unplagged the PSU from the wall, I removed the motherboard battery, I held down the Clr CMOS button for a couple of minut, tens minutes later I put the battery back).
Then I powered it up with nothing but the CPU and the two cables that power the Motherboard and the CPU (the 24pin and the 8pin cables). But nothing changed, it shut down after 1 second.
Then I removed the CPU too, and I powered up the motherboard with nothing but the 24pin power connector on it, still nothing changes.
I also tested another power supply, but no luck.

My motherboard is an Asus Maximus V Formula, and it comes with a watercooling block. I have my watercooling set up, but I think that has anything to do with the issue, right?
Also is there any way that my BIOS has not reset after what I did?

 

[alexoiu]

Still using the watercooling or a stock fan?

 

[JohnnyCowboy]

I think that I just found something. I touched a chip on the board and it was so hot that I almost burn my finger. It's a chip that says "Republic of Gamers" on it and it's under the South Bridge.
It's the chip I have circled in this photo:
http://imageshack.us...1/1282/jc77.jpg

When the motherboard is connected to the power, it gets so hot that I can't touch it.
Any ideas? What is this chip?
(I will also put that in my first post)

 

[SirSub42]

I forget exactly what their name is, but if I recall correctly, it is the chipset controller for the PCIe and USB ports. It operates at around 45 degree Celsius, or about 113 degrees fahrenheit. So burning yourself is quite understandable. You can double check the temperature sensors in the Bios menu, if your motherboard has a sensor for it.

 

[GhislainG]

I forget exactly what their name is, but if I recall correctly, it is the chipset controller for the PCIe and USB ports. It operates at around 45 degree Celsius, or about 113 degrees fahrenheit. So burning yourself is quite understandable. You can double check the temperature sensors in the Bios menu, if your motherboard has a sensor for it.

You can't burn yourself at 45°C; there are places where the outside temperature gets that warm or even wamer.

 

[SirSub42]

I believe the expression was "almost burned my finger". Where I live the temperature never quite reaches 113 Fahrenheit, but I would say I have almost burned my feet on asphalt before on a hot summer day.

If you're going to rag on me about temperature, how about using your motherboard mastery skills and hook us up with regular operating temperatures, or if I was right with the PCIe and USB port controller.

 

[JohnnyCowboy]

I forget exactly what their name is, but if I recall correctly, it is the chipset controller for the PCIe and USB ports. It operates at around 45 degree Celsius, or about 113 degrees fahrenheit. So burning yourself is quite understandable. You can double check the temperature sensors in the Bios menu, if your motherboard has a sensor for it.

I can't really tell what temperature it is, but it's REALLY hot. I can't touch it for for than a second. And this is with the motherboard shut down (but connected to power). When I power it up it gets hotter but it shuts down after 1 second, like I said in my first post.
So how could I find the name of that chip so I could look it up?

 

[GhislainG]

Though it most likely isn't the source of your issue, have you checked your PSU either with a DVM or in another system? You may have broken the motherboard when you connected the fan's LED to the OPT_TEMP1 connector, but I somehow doubt it because it would normally be keyed if it could cause problems. If the PSU is OK and nothing is shorting out, then just RMA the motherboard. Knowing what the chip does is useless since you can't replace it and it definitely shouldn't be very hot; otherwise Asus would have added a heatsink to cool it.