Yet another PC won't boot thread...

[Saberwolf]

I am in the process of building my own computer and can't get it to boot up.

I have the following hardware:
Intel i7-860 CPU
Asus P7P55 WS Supercomputer Mobo.
Corsair CM3X2G1600C9DHXNV DDR3 RAM (4x2g sticks)
CoolMax CUQ-1200B Modular 1200W Power Supply Unit
Cooler Master Cosmos 1000 Full Tower case
Nvidia GTX 285 Graphics Card
Western Digital VelociRaptor WD3000HLFS 300GB Hard Drive
Vista 64bit Ultimate
2TB of extra hard drive space

I'm transferring the hard drives over from a pc I've previously built and they have the OS already installed on it. I have gotten everything set up, and plugged up properly, yet when I go to turn on the system, it won't turn on, no fans spin up...nothing. I'm also not getting any POST codes or beeps.

The green LED on the Mobo turns on, indicating that I am receiving power. I'm positive the Power Supply is good. I've swapped it for a known good one and even checked them both with a PS checker.

I have tried using the POST checker that came with the Mobo to see if maybe the power button itself was bad, but it wouldn't turn on with it either. I've even tried transferring it all to a different case.
I have tried reseating the CPU.
I've reset the CMOS battery and flashed it already.

I've tried to boot it up with the bare minimum hardware installed with no avail as well.

I am also positive that my outlets are working properly.

The only thing I can think of is that I really don't have the set up done correctly or my brand new motherboard is bad. I have the 24 and 8 pin connectors from the PS, all the chassis fans, the usb, HD audio and chassis front panel connectors all plugged in. (As well as the Graphics Card cords when I have it in).

 

[gsaldivar]

Check that the PSU is plugged into the MB? reseat all PCI cards, internal power cords, make sure PSU is switched on, make sure power strip is switched on? Make sure underside of motherboard isn't making contact with the case (short circuit).

Also, using a bright light, inspect the capacitors on the motherboard for any signs of pressure or leakage:

http://www.badcaps.net/images/caps/kt7/kt1.html
http://www.badcaps.net/images/caps/kt7/kt3.html

Good luck!

 

[Intexity]

start at the beginning and double check every connection. make sure your ram is located the the right slots (1 & 2) especially double check the case to mobo connections. if nothing i would be leaning towards a defective mobo since you checked the psu's.

 

[Saberwolf]

Gsaldivar: I checked the board over, and none of the components look as you described. I also tried setting it up outside the case and firing it up with no avail.

Intexity: I think you may be right and the mobo is just defective, though I don't know how... I'm thinking that I may just RMA it with newegg.

 

[pcgeek11]

I've reset the CMOS battery and flashed it already.

How did you flash it if it will not turn on? It is not possible to flash the BIOS without the PC turning on.

Did it turn on before you flashed it and now it will not? If so you must have had a incomplete flash of the BIOS.

My 2 Cents.

pcgeek11

 

[Saberwolf]

How did you flash it if it will not turn on? It is not possible to flash the BIOS without the PC turning on.

Did it turn on before you flashed it and now it will not? If so you must have had a incomplete flash of the BIOS.

My 2 Cents.

pcgeek11

Ah, sorry, guess I was using the wrong terminology... I meant that I used the provided jumper on the 3 pin connector to clear it.

 

[railman]

Your system specs show you have 4x2GB of ram, do you have all 4 sticks installed on the board? If you do that could be the problem. To troubleshoot, turn off and unplug the PSU and let stand for about 10 minutes, this will make sure all current is out of mobo, take out all ram sticks, reinstall 1 stick in slot 1, reconnect PSU, turn on and try to boot.

If that works follow the steps above and install 1 stick of ram at a time, this way if you simply have 1 bad stick of ram you will find it or maybe a bad ram slot on the mobo.

As a side note, some mobo's will not first time boot with a full load of ram installed therfore it is always best to start with the minimum and work up.

 

[Saberwolf]

Your system specs show you have 4x2GB of ram, do you have all 4 sticks installed on the board? If you do that could be the problem. To troubleshoot, turn off and unplug the PSU and let stand for about 10 minutes, this will make sure all current is out of mobo, take out all ram sticks, reinstall 1 stick in slot 1, reconnect PSU, turn on and try to boot.

If that works follow the steps above and install 1 stick of ram at a time, this way if you simply have 1 bad stick of ram you will find it or maybe a bad ram slot on the mobo.

As a side note, some mobo's will not first time boot with a full load of ram installed therfore it is always best to start with the minimum and work up.

Yeah, I've tried that as well... one stick. I've made sure it was in the correct slot as well. I've also tried other sticks of ram that I know are compatible with it just in case it's a bad stick of RAM. Thanks for the tip though.

 

[railman]

I had a problem like this with a build some time ago and I finally found that the connector from the PSU to the Mobo (24 pin) was not completely inserted. Sounds like you have already checked that but you might look again. Also I am not sure about your board but some boards will refuse to boot if they do not detect a keyboard attached. Hopefully you have a wired keyboard so that you can check this out and see. If you do and it is a USB board and you have a USB to PS2 convertor use that instead of using straight USB.