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08-10-2010, 06:16 AM
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#1 |
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Member (3 bit)
Join Date: Aug 2010
Posts: 4
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8 pin ATX mayhem
i have the gigabyte P55A mainboard and a 700+ watt PSU that only has an 8 pin ATX connector. PC won't start with this, but is ok with another psu with a 4 pin atx.
how come? |
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08-10-2010, 08:49 AM
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#2 |
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Member (9 bit)
Join Date: Aug 2009
Location: Conneaut, Ohio
Posts: 478
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make and model on the psu?
its made for a server most likely
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"Hacking is not just a skill, it's an attitude" The Rig: i7-870 - Asus p7p55d-e PRO - 4gb A-Data G-Series - 1TB WD Caviar Black Sata 6gb/s - 2x Asus GTX 460 in SLI - Corsair 850w Power - Antec 1200 case |
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08-10-2010, 09:11 AM
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#3 |
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Member (3 bit)
Join Date: Aug 2010
Posts: 4
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the psu is aywun 750 80plus megapower
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08-10-2010, 09:49 AM
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#4 |
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Member (9 bit)
Join Date: Aug 2009
Location: Conneaut, Ohio
Posts: 478
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if it doesnt have the right connector, there isnt really anything you can do unless you know how to rewire it correctly, and i dont know so i wouldnt try it.
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08-10-2010, 09:58 AM
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#5 |
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Techphile.
Join Date: Nov 2003
Location: San Francisco Bay
Posts: 5,959
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An adapter may be a solution but I don't know exactly what you have or what you need. Or get a suitable PSU.
__________________
Asus P8P67 WS Revolution | Intel 2600K @ 4.7 GHz | Win 7 Pro 64 |8 gigs Corsair 1600 | Two Diamond 6990's in Crossfire| Corsair AX1200 | Thermalright Silver Arrow | Western Digital Black 2TB 64 meg cache | Lian-Li PC-A71B | Logitec Z-5500 | Three Asus 26" VW266H monitors running under Eyefinity | Last edited by David M; 08-10-2010 at 10:12 AM. |
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08-10-2010, 05:18 PM
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#6 |
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Wrench Bender
Join Date: Dec 2002
Location: Plymouth,MN
Posts: 5,961
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Take another look at the 8pin connector, it may snap apart into 2 4pin connectors.
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"When sliding down the banister of life; look out for splinters pointing up."
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08-10-2010, 07:29 PM
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#7 |
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Member (3 bit)
Join Date: Aug 2010
Posts: 4
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this is a core i5- it must have 8 pin atx. Im just curious why it isn't working, workarounds won't do it for me.
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08-11-2010, 11:31 AM
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#8 |
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Member (11 bit)
Join Date: Mar 2006
Location: Columbus, OH
Posts: 1,388
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It appears you attempted to rule out the MB by using another psu. But the psu you used is a 4pin. Essentially this didn't suffice. So the question remains.
Is it the mb or the psu? Since you are able to at least power the mb with a different psu, I'd try the psu first. The issue that may come up, is that because you didn't use an eight pin psu for diagnosis- it may still be a problem with the MB. But, I would naturally suspect the PSU first. It is possible to check the voltages coming from the PSU-but I don't know how.
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Gigabyte 880GA-ud3h / 3.1 Phenom II x2 550 BE Callisto(4 cores and OC to 3.4) / Corsair Vengence 2x4gb DDR3 1600 / 640gb WD Black 2ea./HIS 6870/ 650 EarthWatts / Win 7 64bit Last edited by rwest; 08-11-2010 at 11:35 AM. |
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08-11-2010, 07:08 PM
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#9 |
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Member (3 bit)
Join Date: Aug 2010
Posts: 4
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voltages tested fine
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08-12-2010, 12:31 AM
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#10 |
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Member (11 bit)
Join Date: Mar 2006
Location: Columbus, OH
Posts: 1,388
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I'm a little out of my league here. But were you able to test all voltages? What about for the additional 4 pins? Shouldn't those voltages be there even if not connected?
Correct me if I'm wrong on the symptoms. 1.You can boot with a PSU that has 4 pin connecter. Although this PSU is not really sufficient to run the system. 2.Once the PSU with the required 8 pin connector(aywun 750) is attached, your not booting. 3.The PSU with the 8 pin connecter(aywun 750)tested okay with a meter. If you only tested the psu's main hots and ground - your back to square one. If all 8 pin outs tested good. Then I would suspect the MB. I would assume if all voltages are what they're supposed to be then you probably have a motherboard problem at the connector or along its path. |
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08-12-2010, 08:58 AM
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#11 |
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Member (9 bit)
Join Date: Aug 2009
Location: Conneaut, Ohio
Posts: 478
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full system specs please. especially psu' you are using and mb. everything = best
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