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Still unable to power on, using 850W PSU


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Previous thread: http://www.diy-street.com/forum/showthread.php?t=72749

 

Previously, I could occasionally power on. The status LEDs on the mobo would blink, and I would sometimes be able to turn on -- not recently, however. I bought an OCZ GameXStream 850W, since I was told my PSU was not powerful enough.

 

I installed my new PSU, and all the LEDs on the mobo glow solid. As soon as I hit the power button, all the LEDs blink once (it blinks my other LEDs such as water pump, too). The light that is plugged into the power strip dims for a quarter of a second. The computer does not turn on.

 

What do I do now?

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Which four power connectors are you talking about?

I know absolutely that I have: Motherboard 20 + 4 connectors, hard drives, 1 video card (pulled the power out of the other one), water cooling, and DVD drives. Not sure about any others.

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For a DFI LAN Party NF4 SLI-DR

 

Are all four (4) power connectors plugged into the motherboard? These are;

24-pin main power connector

4-pin 12v secondary connector or EPS

4-pin 5v/12v molex connection or HDD-type

4-pin 5v/12v floppy connection or FDD-type

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I now have:

20 + 4 power connectors

4 pin molex

4 pin floppy.

 

The Floppy connector was not plugged in before.

I also cleared my CMOS (I think).

 

In the course of doing this I completely removed my 2nd videocard.

 

I still cannot turn on my desktop.

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I now have:

20 + 4 power connectors

4 pin molex

4 pin floppy.

 

This is only three (3), the 20 + 4 power connectors counts as one (1) 24 pin main connector.

 

 

You still need this plugged in: 4-pin 12v secondary connector or EPS

 

ALL four (4) connectors need to be plugged in.

 

EDIT

 

Look at this: NF4 LanParty - initial build w/pictures

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I had it incorrectly plugged in.

 

I had the +4 power connector plugged into CPU1, and nothing plugged into the +4 area.

 

Now I have:

20 + 4

CPU1

4 pin molex

4 pin floppy

 

 

Computer now turns on.

However, it will not do anything besides make a long beep over and over.

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I had it incorrectly plugged in.

 

I had the +4 power connector plugged into CPU1

That could be a bad thing. The CPU1 connector consists of 2 12V and 2 ground wires. If I remember the pinout on the +4 connector correctly. you may have fed 12V and 3.3V to the ground side of the motherboard.

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