Start up problem

[Zagnor]

I just built a new computer. When I start it, all the fans come on, the lights on the graphics card, the cd drive and ram come on, the graphics card info is desplayed on the screen then after about 2 seconds, it turns off. I get no error beeps.
Anyone have any idea what might be wrong?



computer stats:
Intel Pentium D 830 3.0GHz
Corsair TWIN2X2048-5400C4 2GB DDR2-667
MSI P4N SLI-FI NVIDIA Socket 775 ATX Motherboard
PNY VCG6800GXPB Geforce 6800GT 256MB 256-bit GDDR3 PCI Express
Maxtor SATA Ultra16 250GB Hard Drive
Pioneer DVDRW CD drive

[giantkoreandorq]

What's your PSU output?

[Zagnor]

450 watts

[giantkoreandorq]

Did you check that article, Build Your Own PC, off PCMech? There's a page in there thats called "Initial Boot-up".

http://www.pcmech.com/byopc/step/17/

[Louds3]

What make and model is your powersupply. Do you have both power connectors plugged into the motherboard (24 pin and 4 pin). I think this sounds like you may be shorting out somewhere. You may want to consider an out of case build to see if you can get it up and running http://forum.pcmech.com/showthread.php?t=132409
You may also want to try reseating the RAM or trying to boot with just one stick installed (see your motherboard manual to check which memory slot to use).

steve

[Zagnor]

"Did you check that article, Build Your Own PC, off PCMech?"
It turns off around step 3c. Not sure if the hard drive is spinning up or not.


The power supply is a Just PC, JPC 450 - 12 V. It came with the case.

It's connected to the motherboard in 3 places. The 24 pin connector, a standard 4 pin connector and another square 4 pin.

Using just 1 stick of ram didn't help so I'm going to try taking it out of the case

[Zagnor]

Ok, I took it out of the case and followed the instructions ( http://forum.pcmech.com/showthread.php?t=132409 ) and I got the same results

[Louds3]

this does seem like a powersuplly issue to me. Do you have any other powersupplies that you know work that you could test with. Maybe someone else has another idea? Never heard of Just PC powersupplies you are better off with a better unit anyway, you have a nice parts list there it's really not worth skimping on the powersupply. see the first 2 stickies here...http://forum.pcmech.com/forumdisplay.php?f=5
I am assuming that psu came in your case?
Hmm, on my build I know the first thing the motherboard looks for when I power on is my graphics card, perhaps the card is shot? hope this helps

steve

[Cricket]

Is the heatsink installed properly? The push pins aren't fun to work with.

Cricket

[Aussie01]

Im not real up to date on this sorta stuff but i think the bios should load next? so have you tried replacing the bios battery?

i wouldnt of thought it would be the GC if it displays the info to start with. and if it powers up ok i wouldnt really suspect the PSU...
but i would be thinking bois and maybe cpu.

But as i said im no pro just a few thoughts.

[Zagnor]

Ok, I don't think its the graphics card. I removed it and the same thing happened (except the display of course)

I'm pretty sure the heat sink is on good. Those push pins are a pain but I got them in. Wouldn't it take a bit longer for heat to become an issue? Or at least a bit more varied time?

I guess I should go ahead and get a different power supply. I was kind of wary of that splitter the graphics card had to connect to 2 standard power connectors anyway.

[Wolfeyes Witz]

Try unplugging all I/O devices except the monitor and PC. Then turn on the monitor and then the PC...and see what happens. My computer has been doing the same thing and I also thought it was the power supply but it wasn't, nor was it the vid card. If it does startup correctly plug in a wired mouse and keyboard and reboot and go from there.

[jord533]

Not sure if this has anything to do with it but i have heard of problems with the dual core Pentiums and the MSI P4N SLI-FI motherboard. I am about to build a new pc and was about to start a new thread about this issue but maybe this is a better place to address it? This may be causing your problems any one know?

[Zagnor]

Originally Posted by Wolfeyes Witz Try unplugging all I/O devices except the monitor and PC.

Actually, it's only had a keyboard attatched to it once.

Originally Posted by jord533 Not sure if this has anything to do with it but i have heard of problems with the dual core Pentiums and the MSI P4N SLI-FI motherboard. I am about to build a new pc and was about to start a new thread about this issue but maybe this is a better place to address it? This may be causing your problems any one know?

Ok, I looked into this and the problem is appearantly that they just function as single core. Also, according to MSI, it's just the 820 and I have the 830
http://www.msi.com.tw/program/produc...UID=663&kind=1

[glc]

If the heatsink is not fully contacting the CPU, that's about how much time it would take to overheat and shut down. You may *think* the pushpins are fully seated and locked, but I bet they aren't.

[nicolaus corelius]

the nvidia SLI is not compatible with 820. i donno about x16, though

[Zagnor]

Good news. I put in a new power supply and reseated the cpu fan and now its working. (Not sure which one of these fixed the problem) Thank you everyone for your help. : )