I got a new computer today and the service for building it up was damn expensive so I decided to do it by myself with a friend who knows just as much as I do.

Anyway, we built it following instructions in Japanese even though our Japanese level isn't very high (I can read it but some technique words are hard to understand, so chances are we missunderstood something).

The PC I got has 4Gb of RAM, a GeForce 9600 GT, 500Gb HDD, Intel Core 2 Quad (or something like that) at 2.6Ghz (then the DVD driver, etc..)and the box itself has 4 fans installed on it from the beginning.

From the Power suply installed on the box and it has a LOT of wires connected to it supplying electricity to the DVD driver, the HDD and the fans.

The exact problem is this:

- I turn on the computer and all the fans start running and the lights inside the computer (the LEDS on the fans and the green LED on the motherboard) turns on. Then after a few seconds everything turns off except the gree n LED on the motherboard, and it turns on again and stays like that all the time.
Meanwhile, the screens goes 'No signal' and the power button turns yellow (sleep mode or something similar, you know, like when the PC is off and you turn the monitor on).

Damn.. I was expecting to be able to do it but right now I'm so lost. I have the computer right next to me so I can check anything. Help needed!! Fast!!!!! (my laptop is dying after a few years of overuse).

Just a heads up I ran into a similar issue mid last year putting together a friends rig for him and it turned out to be a faulty mobo. I would just make sure that everything is plugged in and seated properly and if you are seeing the mobo and everything come to life and still aren't getting video on your monitor then it would be best to return the video card and mobo and just get new ones since one of the two is your problem.

Did you mount the mobo on brass standoffs, or directly to the case?
What is the brand and model of the PSU? Mobo?
Is the 4-pin CPU power cable plugged in?

jtt283 is dead on with the psu observation. I have had bad psu's or not completely plugged in psu cables that do the same thing as what you are describing. Stand-offs.... I really hope this isn't a stand off issue. If it is, then you have fried the mobo.

What do you mean with 'brass standoffs'? I placed the micro while having it on top of my table (with some protections underneath so it wouldn't get scratched nor anything) and then placed it into the case.

The PSU is: Abee (a Tokyo company?) ATX120V Ver.2.2 AS Power Silentist. 650W (Peak).

The Mobo is: Asus P5K-E (FSB 1600).

Actually the mobo has this 'Plug and Proof' thing where the LED turns on RED if something is wrong. Mine is green, but maybe both mean BAD?. Dunno.

The 4-pin CPU power cable?.. Uhm.. I'm really NEW into this so I don't really know what you are exactly talking about. My current laptop won't display google for some reasons so I don't know what that is.

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hairycat101, wow.. that's now scary..

To see if that's the error, how can I check it?..

4-Pin CPU Power Cable is just a cable coming out of your PSU that has 4 pins that forms a small square and has a clip on one end and you plug it into the mobo and it powers your CPU. Brass Standoffs are the little brass screws that you put inside the case base plate so that when you screw your mobo down it is only touching those brass standoffs and not the case itself.

Ya if the 4 pin CPU 12v atx isn't plugged in, it will not turn on.

Next time get instructions in English so you can read them. Download a english manual form the manufacturer website.

The mobo mounts into the case with screws through holes; typically about eight of them. The screws should not go directly into the case, but into brass standoffs that are screwed into the case first. A few cases may have the posts pre-installed. If you didn't use standoffs, circuit traces on the mobo will contact the case, shorting out. Almost invariably, a death is involved.
The 4-pin CPU power cable is an additional power cable that goes from the PSU to a 4-pin socket located somewhere near the CPU socket. On the PK5-E, it is located on the very edge of the board. If your PSU has a 20+4 pin main power cable, it is NOT that little 4-pin plug, but an entirely separate one.
If you don't see one, your PSU may have an 8-pin mobo plug on it instead. Check its documentation, but generally you would use 4 of its 8 pins. Do not force any cable into place; they are all keyed to go in where they belong.

Ah yeah the Mobo has those brass screws on it so the mobo isn't touching the case itself, only the screws.

And the 4-Pin CPU Power Cable is connected into the mobo, I believe..

*checks*

Uhmm.. I have this 24-pin (20 pins + 4 pins, all of them connected into the same white large slot) thing plugged into the mobo..

Also the fan on top of the micro, spins, and it takes the energy from the mobo, so I would guess it's connected fine.

Wow... didn't know that at all.

Now, I know this is asking TOO MUCH, but damn I would appreciate it:

Could you locate a pic of that mobo and point the 4-pin plug on it? I can then check where it is, see if I connected or not something to it and therefore proceed to do it.

Thanks to all you guys!!!!!

I MADE IT!!!

IT WOOOOOOOOOORKSSSSSS

DAMN I LOVE YOU GUYS!!!!!

EDIT- It says I have 512mb of ram, why?
Also it says the Drive wasn't detected.

And finally, 'Chassis intruded! Fatal Error... System Halted.'

Fun fun. Happy fragging.

Edit: Oops. Reseat your RAM. Reset the BIOS to defaults.

Reseat the RAM. Boot from the DVD drive and install the operating system.
Turn off in the Bios "Chassis intrusion".
Good to go.

When does it say you have 512MB of ram? if it's on startup it is likely your Video RAM like it'll say Nvidia 512MB OK or something like that.

Drive wasn't detected means that your Hard Drive can't be found so check to make sure it's properly plugged in for power and there's a cable connecting it to the motherboard.

The Chassis intruded error sounds like some sort of case open warning, check your bios to see if there's some kind of warning system that you can turn off.