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New build, am I running enough power through my system? Please Help.

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February 1, 2013 5:08:26 PM

So I just completed my first build a little while ago. Everything works, but there's one problem. Whenever I turn the computer on, the power supply fan starts turning for a few seconds then dies out, and the computer won't boot up. Everything else works; the CPU fan, case fans, graphics card fan, etc. A friend is coming over today to take a look at it and see if there is anything super obvious that I did wrong, but I had a question that I thought I'd bring here.

Seeing as all of you, well most of you, know more than me, I was wondering if you could assess my built and tell me if I have a high enough watt-rated power supply for what I'm running, or if I need to get a higher one. Here's my build:

CPU: AMD FX-8150 Zambezi 3.6GHz Socket AM3+ 125W Eight-Core Desktop Processor
CPU Cooler: Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler
Motherboard: ASUS Crosshair V Formula-Z AM3+ AMD 990FX SATA 6Gb/s USB 3.0 ATX
Memory: Corsair Vengeance 8GB (2 x 4GB) DDR3-1600 Memory
Storage: Samsung Spinpoint F3 1TB 3.5" 7200RPM Internal Hard Drive
Video Card: EVGA GeForce GTX 670 2GB Video Card
Case: SilverStone Raven 3 RV03B Full Tower
Optical Drive: Asus DRW-24B1ST/BLK/B/AS DVD/CD Writer
Operating System: Microsoft Windows 7 Home Premium SP1 (64-bit)

The power supply I'm using for all of this is a Corsair 650W ATX12V / EPS12V Power Supply. If someone could take the time to look at this and tell me if I'm running enough power through my system or not, I would REALLY appreciate it. Thank you so much!
~Anticonfection :) 
February 1, 2013 5:26:10 PM

That power supply is more than enough :) 

Its either a dodgy PSU and needs returning or you've missed something in the process of building. not sure what you could of missed tho.

other than 24pin + 8pin power cables, and made sure CPU Fan is In the correct header which should be marked on the board CPU_FAN usually
February 1, 2013 5:29:25 PM

24pin power cable? I have the 8pin in the right spot, and the CPU fan in the right header, but I didn't see a 24pin cable o.o
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February 1, 2013 5:32:09 PM

20 or 24 pin sorry, probably a 20pin on that PSU.
a b ) Power supply
February 1, 2013 5:33:45 PM

^+1 the psu is fine

24pin cable is the main power cable to the motherboard--used to be 20 pin on older motherboards

so if your psu has a main motherboard connector that can split into 20 pins and 4 pins

you need to use both parts
February 1, 2013 5:36:12 PM

ahh thought it was 24 on modern systems i know my Ocz is 24..

You'll have to connect the 24pin & your system should boot fine.
a b ) Power supply
February 1, 2013 5:36:51 PM

joeh_87 said:
20 or 24 pin sorry, probably a 20pin on that PSU.


no its a 20 + 4

so you can connect to either older style or newer style motherboards

thats why i said to make sure they use both parts
February 1, 2013 5:39:38 PM

yeah of course. same end number :D 

and of course they split to use on older systems, but he will need the extra 4 pins in! if hes already plugged 20pin in.
February 1, 2013 5:49:11 PM

OP here. Alright, I see what you guys are pointing out but I didn't notice the extra 4pin connector because it was attached co closely to the 20pin and it looked like one plug. I found the 4pin header for the 4pin plug but there's a problem now. The reach isn't long enough for me to have both plugged in. Is it okay to but a little bit of the sheathing to get a little stretch, then patch up the extra with some electrical tape afterwards?
February 1, 2013 5:50:13 PM

cut the sheathing, not but the sheathing*
a b ) Power supply
February 1, 2013 5:50:34 PM

not familiar with that motherboard

but--it appears to have both an 8 pin and a 4 pin for the cpu

marked eatx12v and eatx12v 2

not sure if its necessary to both be connected in order to be able to boot

would have thought the 8 pin would be enough but without reading the user manual cant say for sure
a b ) Power supply
February 1, 2013 5:51:14 PM

anticonfection said:
cut the sheathing, not but the sheathing*


dont cut anything
February 1, 2013 5:53:01 PM

I wouldn't risk it on a good PSU i know you may want the system up and running but i'd buy an extension cable

http://www.overclockers.co.uk/showproduct.php?prodid=CB...

i cant see how the 4pin cant reach if the 20pin reaches but yeah get a extension is the best bet imo.

as Mcnumpty says if hes just looked at your board.. not familiar with that setup either. is the extra 4pin header not on the end of your 20pin header?
a b ) Power supply
February 1, 2013 5:53:14 PM

if it was already attached to the 20 pin giving a total of 24 pins then the 4 pin may be something else

all 24 pins go in the same socket on the motherboard so should reach fine
February 1, 2013 5:53:39 PM

mcnumpty23 said:
dont cut anything

How can I hit that stretch, then? Do they sell extenders?
a b ) Power supply
February 1, 2013 5:54:36 PM

joeh_87 said:
I wouldn't risk it on a good PSU i know you may want the system up and running but i'd buy an extension cable

http://www.overclockers.co.uk/showproduct.php?prodid=CB...

i cant see how the 4pin cant reach if the 20pin reaches but yeah get a extension is the best bet imo.



he may be looking at the extra 4 pin 12v socket for the cpu i mentioned
a b ) Power supply
February 1, 2013 5:56:33 PM

to the op

lets try to make things clearer

to the right side of the ram slots is the 24 pin connector

are all the pins occupied or are 4 empty?

February 1, 2013 5:57:38 PM

Wait, the plug is fit for a 20+4 pin cable, but there is an extra 4pin header a little ways away from it that is labeled EATX12V_2.
February 1, 2013 5:58:24 PM

mcnumpty23 said:
to the op

lets try to make things clearer

to the right side of the ram slots is the 24 pin connector

are all the pins occupied or are 4 empty?

They are all occupied when I plug in the 20+4pin connector.
February 1, 2013 5:58:54 PM

possibly

OP: Your psu will have a 20+4 Connector make sure they are connected together correctly and plug it into the 24pin header which is located near your DIMM slots.

& try and boot.

a b ) Power supply
February 1, 2013 6:00:01 PM

yeah i already said that there was a EATX12V_2

thats why i am asking if all the sockets on the 24 pin connector are full

you dont use 4 pins from the main power connector for that EATX12V_2
a b ) Power supply
February 1, 2013 6:02:05 PM

They are all occupied when I plug in the 20+4pin connector.

in that case the eatx12v 2 needs a 4 pin connector in it

though dont know if it will boot without that or not would have thought the 8 pin would be enough

but dont know for certain
February 1, 2013 6:04:51 PM

no the 8pin should be enough... i'm sure the Eatx12v 2 4pin is for older psus with only 4pin connectors instead of 8 could be wrong tho.
February 1, 2013 6:05:28 PM

I'm looking through all of my stuff and I can't find anything with a 4-pin connector.
a b ) Power supply
February 1, 2013 6:07:20 PM

joeh_87 said:
no the 8pin should be enough... i'm sure the Eatx12v 2 4pin is for older psus with only 4pin connectors instead of 8 could be wrong tho.



no you are wrong

if he only had a 4 pin connector he would put it in half of the 8 pin socket
February 1, 2013 6:08:24 PM

hmmm stand corrected then.

Not had a PSU with 8pin, 20+4pin & another 4pin : /
a b ) Power supply
February 1, 2013 6:08:53 PM

anticonfection said:
I'm looking through all of my stuff and I can't find anything with a 4-pin connector.


just reading the user manual

you dont need the eatx12v 2 connected to boot--just the 8 pin

the eatx 12v 2 is to provide more power if you use more than one graphics card
February 1, 2013 6:12:26 PM

anticonfection said:
I'm looking through all of my stuff and I can't find anything with a 4-pin connector.



the 4pin is connected to the 20pin normally

as long as you have the 24pin header next to your dimms fully occupied & your 8pin connected you should be able to boot.

http://lian-li.com/v2/tw/product/upload/image/pss/psu20...
a b ) Power supply
February 1, 2013 6:15:27 PM

joeh_87 said:
hmmm stand corrected then.

Not had a PSU with 8pin, 20+4pin & another 4pin : /


got 20+4 and 8 pin that can split into 2 x 4 pin and another 8 pin that can split into 2 x 4 pin on my psu

far as i remember--it came with so many cables its hard to remember them all

anyway his motherboard user manual says only the 8 pin needs connecting to boot

so the issue is something other

like a short or hes connected the power switch wrong or faulty psu etc
February 1, 2013 6:21:11 PM

Still having the same reaction. When I start it up, the LED on my case by the power button flashes red for just a second then goes back to the white LED color. It makes a sound like air being released, like a scaled down version of a Semi truck's air brakes.
February 1, 2013 6:29:50 PM

Everything seems to be connected right and I am using standoffs. I was gonna pull it apart again and look over it real quick, but I realized that I have to head to my College class. (Kinda ironic, I'm studying Electrical Instrumentation and I'm having electrical problems.) My buddy is gonna come over after I get out of class and we're gonna tear it down and build it from the ground up again. Maybe keep this a little active for a few hours, I'll be posting on here again tonight when he gets here.
Thank you again for all of your guys' help, you'll probably be hearing from me here soon.
a b ) Power supply
February 1, 2013 6:34:07 PM

try it outside of the case

to rule out a short circuit

and you have connected 2 x 6 pin connectors to the gtx670?

also connect the little speaker if you have one for error beeps
!