New build gone wrong

[shill652]

Hi,

I recently decided after years of playing with computers to build my own.

Here’s the components list;

Intel core 2 duo e6750 2.66ghz
Western digital 80gb sata 2 hardrive
1bg ddr2 dual channel ram
Asus p5n-e sli nforce 650 pci express ddr2 motherboard
Samungs dvd+rw serial ata rewriter
North q power supply 400w
Pny 7200gs 128mb pcie graphics card

plus a case and samsung monitor.

The problem I have I have no idea why it is happening. Basically, it turns on, everything works, fans spin etc, but it beeps once when it gets to the motherboard screen. All parts are new, with no os installed.

Here is a picture of the screen that it freezes on.

http://i171.photobucket.com/albums/u...s/PA110001.jpg


I would have normally pressed delete or tab on this screen, but for some reason the keyboard is un responsive, the 3 led lights on the keyboard flash but then turn off. I cant get past this screen, I have tried another keyboard which I know works as I use it on the family computer. The keyboards are not usb, they are ps2, but I have even used a usb convertor but they still don’t work. I’m really at a loose end here.

I would greatly appreciate any help you could give. Thanks very much.

Simon

[Cricket]

Can you get into the BIOS?

I've never heard of that power supply brand and don't know if it's a good quality unit or a piece of junk. Was it pretty heavy or did it almost feel empty?

Cricket

[shill652]

I cant get into the bios at all, as the keyboard for some reason becomes inactive.

as for the power supply, it felt about the right weight and its quite good build quality.

[shill652]

any body got any ideas?

[Alaron]

From a bit of research, the NorthQ units aren't too bad quality, but I still think that is a more likely culprit then a bad Asus motherboard. Do you have any other PSUs to swap in?

[shill652]

no none that are as high i have a 350 psu and a 250 and seeming as this one is a 400 it should be better. i think im going with your idea of a faulty motherboard, how can i test it?

[shill652]

ok so heres an update. when i first turn it on, if i keep tapping delete then it says "entering setup..." but then it freezes. if i do the same but press tab, it gets half way through posting then after the cpu test it freezes again. what could this be?

[Cricket]

I would try the 350 watt PSU with the core components (motherboard, CPU, CPU heatsink, 1 stick of RAM, video card, monitor) just to see if the system POSTs. If the problem persists then you know the problem isn't with the power supply.

You might want to pull the motherboard from the case and work on a non-conductive surface too...that's a basic troubleshooting procedure. Don't connect any drives until you know the core components are good.

Cricket

[shill652]

ive done a bare bones test with the 400 and the problem stilll persists. should i still try it with 350?

[shill652]

ok tried the different psu, still has the same problem. wat do i do now?

[FLG]

Are you using 2 different sticks of RAM?, try using one at a time. If its 1 stick, do you have another you can test with?

[Cricket]

If you've only assembled the core parts and still have the problem at least you now know it's got to be one of those parts causing the problem. Sounds like it's not the power supply. Do what FLG suggests for the RAM. If the problem still persists, see if you can try another video card. If the problem still persists then you know it's either the motherboard or the CPU...between the two, I'd suspect the motherboard before the CPU.

Cricket

[shill652]

well i had 2 sticks in there and i took one out and it still didnt work, but i have switched there positions around and it seems to be fine now. installing xp as i speak. thanks everybody for all your help