CPU fan runs, case fans don't.
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Power Supplies
- Do It Yourself
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Motherboards
Last response: in Motherboards
Psycho Guppy
August 1, 2014 8:01:13 PM
I just finished my 1st DIY PC. The case fans (Coolermaster 922 HAF) won't run when connected to the motherboard (ASUS Z97-A). They do work if I connect them to the PSU directly.
I have a Crucial SSD, Seagate HDD, ASUS DVD drive and 8 (2x4GB) of Corsair Vengence RAM (1600 MHz) all connected to the MB properly (as far as I know). I do not have an operating system installed as I haven't gotten the computer to start properly yet. As far as I know, the computer should still boot.
Also, I don't have any kind of video. I'm using an eVGA Geforce 770 GTX OC connected to an LCD screen via DVI-D. The fans on it are running.
During "startup" there is no sound, no beep, no video. The fans turn on and the motherboard LED lights come on (showing it has power).
Any idea what's wrong? Motherboard? PSU? Operator/builder error?
Is it worth sticking a different (known good) PSU in it to see if anything changes? Do I have to plug all of the drives/video card and such in, or can I just use the main motherboard power cable to see if the BIOS screen shows up (or any kind of video signal)?
I have a Crucial SSD, Seagate HDD, ASUS DVD drive and 8 (2x4GB) of Corsair Vengence RAM (1600 MHz) all connected to the MB properly (as far as I know). I do not have an operating system installed as I haven't gotten the computer to start properly yet. As far as I know, the computer should still boot.
Also, I don't have any kind of video. I'm using an eVGA Geforce 770 GTX OC connected to an LCD screen via DVI-D. The fans on it are running.
During "startup" there is no sound, no beep, no video. The fans turn on and the motherboard LED lights come on (showing it has power).
Any idea what's wrong? Motherboard? PSU? Operator/builder error?
Is it worth sticking a different (known good) PSU in it to see if anything changes? Do I have to plug all of the drives/video card and such in, or can I just use the main motherboard power cable to see if the BIOS screen shows up (or any kind of video signal)?
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Psycho Guppy
August 1, 2014 8:06:53 PM
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Psycho Guppy
August 1, 2014 8:13:09 PM
Psycho Guppy
August 1, 2014 8:19:45 PM
Card? You mean the 770? Yes. Both the PCI-E power connectors from the PSU are plugged in, and the fans are running on the ACX cooler the 770 comes with. The SSD is plugged in to the MB via a SATA cable and to the PSU via the power cable that fits the plug (lol). I didn't forget to put the RAM in either
Edit: The motherboard has a long connector from the PSU plugged into it, with 2 rows of pins. As far as I know, that is the only MB power connector.
Edit: The motherboard has a long connector from the PSU plugged into it, with 2 rows of pins. As far as I know, that is the only MB power connector.
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Psycho Guppy
August 1, 2014 8:25:10 PM
Psycho Guppy
August 1, 2014 8:29:00 PM
Psycho Guppy
August 1, 2014 8:34:55 PM
Grr...I immediately saw the plug on the MB you're talking about. Very clear now. The plugs from the PSU don't seem to fit though. Some of the pin cases (if that's what they are called) have rounded sides, and some are square. I'm rotating the plugs to find some way to match them up....don't give up on me!
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Psycho Guppy
August 1, 2014 8:44:31 PM
Ok, you can't really see it in the pic you posted of the MB, but the plug on the MB goes like this:
(From left to right on the top row, as the pic you posted is oriented)
Rounded, square, square, rounded
(Form left to right on the bottom row, as the pic you posted is oriented)
Square, rounded, rounded, square
The only pair of 4 prong plugs I have don't match that. Well, one plug does and fits (as your photo is oriented) on the far left end, leaving 4 pins remaining. The other plug has 4 pins but they all have a rounded side to them!
(From left to right on the top row, as the pic you posted is oriented)
Rounded, square, square, rounded
(Form left to right on the bottom row, as the pic you posted is oriented)
Square, rounded, rounded, square
The only pair of 4 prong plugs I have don't match that. Well, one plug does and fits (as your photo is oriented) on the far left end, leaving 4 pins remaining. The other plug has 4 pins but they all have a rounded side to them!
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Psycho Guppy
August 1, 2014 8:53:00 PM
Psycho Guppy
August 1, 2014 9:00:15 PM
Psycho Guppy
August 1, 2014 9:05:36 PM
OK. The only connectors I have that look even remotely close are the 2 4-pin ones that I've been trying and one of them just doesn't fit....2 6-pin connectors (obviously not right).....and 2 4+2 pin connectors marked PCI-E which are plugged into my video card (one 4 pin without the extra 2 attached to one plug, and one 4 pin with the extra 2 pin next to it for a total of 6 pins plugged in). GGAAAAAAAHHHHHHH!!!!!!!!!!!!
Edit:
Sorry, the PCI-E are 6+2 pins each, with only one of the plugs using the max of 8 pins)
Edit:
Sorry, the PCI-E are 6+2 pins each, with only one of the plugs using the max of 8 pins)
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Psycho Guppy
August 1, 2014 9:09:43 PM
Hey! That's exactly the plug I'm talking about!!! I have that plug! See the 4-pin on the right in the photo? The one that has all rounded (on one side) pins? That #%%$@# won't plug in because 2 of them need to be square :-/
Edit:
The other plug (on the left) has opposing (diagonally) square and rounded pins. I need another one of those!
Edit:
The other plug (on the left) has opposing (diagonally) square and rounded pins. I need another one of those!
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Psycho Guppy
August 1, 2014 9:18:01 PM
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