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Computer won't power on -- problem with 4 pin connector / PSU

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  • Corsair
  • Memory
Last response: in Memory
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October 23, 2011 6:03:26 PM

Hi Friends,
I planned to upgrated my system so I bought new PSU – Crossair GS600W.
When I plug in both the 20-pin and 4-pin connectors to the mobo and hit the power button, the lights flicker briefly and turn back off. When I have ONLY the 20-pin connector attached (ie, once I remove the 4-pin connector), the power supply will stay on (fan running).
But system is working fine with my OLD PSU – 450W.
The only thing attached to the mobo are the CPU/HSF and PSU.


Please let me know if there is something as my MotherBoard doesn’t support this much of power supply or my PSU is faulty.
HD – Segate – 500GB
Memory 1 – INTEX – DDR2 – 2GB
Memory 2 -- INTEX – DDR2 – 2GB
Mobo -- MSI 945GCMS2L - Gigabyte
Video card – AIT 6770 HD
CPU – Intel Dual 2 Core – E7200 – 2.53Ghz
PSU – GS600 - Corssair

More about : computer power problem pin connector psu

a c 128 } Memory
October 23, 2011 6:20:00 PM

You don't need the 4 pin connector; it may not belong with the 20 pin section. It may be the separate 4 pin for the 12v connection next to the cpu socket. I run my old antec power supply 20 pin connector in a 24 pin slot with no problems.
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a c 128 } Memory
October 23, 2011 10:11:03 PM

Well, after reading your post a second time, I would return the power supply to the vender or request an rma from corsair.
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October 24, 2011 8:59:41 AM

I removed one RAM from my system and ...U SMPS worked ...don't know the reson of this..as my RAM is working with 450w SMSPS....

Thanks for all ur support
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