CPU Fan header problems

[FITLIKELOON]

Hi Folks, first off sorry if this has been asked and answered else where.
I am putting together a new system:

Thermaltake Tai-Chi VB5001SNA Pre-Installed Water Cooling System
Gigabyte NA-680SLI-DQ6 Motherboard
Intel Core 2 Quadro Pro Q6600
Corsair 2 GB DDR2 XMS2 Dominator RAM
BFG GeForce 8800 GTS OC 640 MB x2
Enermax Galaxy 1000W modular PSU

I have assembled everything, the 3 pin connector from the water block is connected to the CPU Fan 4 pin header. When I power up the system, I get power for less than 1 sec, power cuts and the Galaxy error bleeps. and shuts down.

Connecting the Intel cooling fan that came with the processor and the sytem powers up ok, it looks though the sytem is shutting down because it does not think there is a fan connected to CPU, I am looking for any suggestions how to get round this. The watter block connector is three pin with 2 wires connected to pin 1 & 2. The Intel fan connector is 4 pin with 4 wires connected.

Are there any converters that I can use on the waterblock connector.
Is there way to bypass this safety feature andis it safe to do this.
Anny suggestions to help me get this system up and running will be very much appreciated.

Thanks in advance

 

[VinDSL]

Try bypassing the header, use an adaptor (or whatever), and connect it directly to your PSU, or fan controller, if you have one.

 

[Zepper]

What does that water block connector do? Generally the CPU fan header must be connected to a working fan with a working speed sensor. If it isn't and you attempt to start up, you will have to clear the CMOS in order to attempt a startup again. This is to protect your CPU from overheating.
. You can temporarily connect the CPU Fan header to a known good fan with speed sensor after you have reset your CMOS and on first boot go into the BIOS and DISABLE the CPU protection feature. Then you can hook whatever you want to the CPU Fan header as long as it doesn't put too much draw on it. Usually if it draws 0.5A (500mA) or less, you should be safe using a mobo fan header. Some mobos can supply more, but if you can't find out for sure from your mobo manual or web site, go with the number I gave.

.bh.

 

[Binky]

Turn off the feature(s) in the BIOS that monitor the CPU fan and shut the system down if it's not spinning.

 

[Billb2]

That's a LED (blue light) connector for illuminating the water block!

It draws so little power that the MOBO (thinking it's the CPU fan gone bad) shuts down.

Hook it to another power source. Then disable the CPU fan monitoring in the BIOS. Or you could hook another fan (case fan?) to the MOBO connectior.