Problem with new pc

[Coreper]

today I started putting together my new pc from the parts I recently bought, but a problem has occured:

when i turn on the computer, my monitor shows: no signal [i tried all the ports on my graphics cards, and waited a while every time, but nothing happened.]

this are the parts from my computer:

Motherboard: Asus P5N32-E SLI

Memory: OCZ Reaper 4 GB PC6400 CL4-4-4-15 Dual kit [compatible with motherboard]

Graphics cards: 2x nVidia GeForce 7600 GT in SLI [with included Asus SLI bridge]

CPU: Intel Core 2 Duo E6850 Dualcore 3Ghz

Power supply: OCZ StealthXstream 600W

what i know:

-graphics cards work fine [im using them while typing this and gaming is also perfectly possible...]

-harddisk works perfectly [using it now]

-processor works, otherwise nothing else would work

-motherboard works: power light lights up

-all fans work

-power supply works ok: enough power: dvddrives[2] work, all fans[4] work, neon works...

what i tried:

-tested graphics cards seperately on another pc: works fine

-tested hard disk on other computer: works fine

-dvddrives work ok

-everything is properly connected, as far as we know

i would appreciate it very much if you could help me as soon as possible

thanks in advance!

[-pops-]

Have you independently tested the RAM?

Even though the motherboard lights up, it doesn't necessarily mean that the board is OK. The M/B seems to be the only thing you haven't independently tested and, with such complex circuitry, it is fairly common that M/Bs are faulty.

As a trial, boot up with just the graphics card and one stick of memory attached to the M/B. Is there anything on the monitor?

[Coreper]

i already tried booting with one graphics card, but that didnt work

ill try with one memory stick

i could also try switching the memory in the new computer, with the memory from my old computer

btw: you said: "boot up with just the graphics card and one stick of memory attached to the M/B", but a processor is also needed, right...?

[-pops-]

Well, yes, a processor is required. I don't consider that as a peripheral component but an essential part in the same way as the BIOS chip with the difference that you choose the CPU yourself and not have it as a immovable fixture :)

[Coreper]

ok

i tried:

-start with 1 new memory stick and 1 gr.card: doesnt work

-start with 1 old memory stick and 1 gr.card: doesnt work

while starting i didnt get any error beeps...

someone else said it might be the processor, how do you think about that? [the compatibility list says the M/B is compatible with this proc...]

[-pops-]

It could be the processor but, in my experience, faulty processors are rare - I've never had one but I have had faulty motherboards.

Do you have a friendly local computer builder with a CPU testing jig?

[Coreper]

not that i know of: one recently went bankrupt...

thats what i hate about the town i live in...: no decent computer store near...

[Alan2273]

Have you tested your PSU?.

[Coreper]

i wouldnt know how, but i think it is ok: all the fans work properly and lighttubes works properly...

[Mike567]

volt meter yellow+black 12v and red+black 5v.

What about the monitor cable, is it working?

or how about the computers trying to send a signal that is at a too higher frequency, happened to me many'a times like I used to have a old CRT booted up knoppix and it's frequency was too high for my monitor to cope, but I did see the BIOS loading.

[Coreper]

well, i use the same graphics cards and monitor [TFT] right now, which doesnt give any problems...

and... i dont have a voltmeter...

[Coreper]

after using an old Pentium 4 i was able to update the BIOS

after the update the E6850 worked

i am typing this on my new computer :)