Computer Only Boots the First Time After Receiving Power

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OCG123123

Reputable
Dec 24, 2015
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4,510
I recently just upgraded my computer with a new motherboard, CPU, SSD, and case, and for whatever reason, the computer decides it doesn't want to start up after I power it off after turning it on once. The computer restarts fine, and the only way I can get the computer to boot again is to unplug the power cable in the back of the computer and re-plug it back in. I've tried just flicking the switch on the power supply and pulling the power cable out of the surge protector, and both don't have any effect on the computer's refusal to boot. It only will turn back on when I remove the power cable in the back of the computer and re-plug it back in, and it faces the same issue again once I turn it off. The computer works perfectly during the first boot.

PC Specs:
Motherboard: ASRock Fatal1ty Z97 Killer
Ram: 4x2 GB Assorted sticks
CPU: i7-4790k
GPU: Nvidia GTX 970
Power Supply: Corsair CX-750M
Storage: 500gb Samsung 850 EVO & 1TB Western Digital Blue
Case: Thermaltake Commander G41
 
Solution
C12Friedman
It's precisely what I would think having seen many threads about CX models failing, the problem with the CX models is the use of less than stellar capacitors in the secondary* which has lead to an early demise in many cases. It's the real factor in bringing the CX and VS models down to tier 4 on this list http://www.tomshardware.com/forum/id-2547993/psu-tier-list.html - at one year old, you should still covered by warranty. I'm sticking with the RMA thing here

* a cost cutting measure used in many entry level PSU models (not exclusive to Corsair's CX or VS series of PSU's)
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OCG123123

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Dec 24, 2015
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All of the connections feel to be tight, and I've been using this power supply before the upgrade for almost a year without problems, so I don't think that the power supply would suddenly decide to stop working. I don't really think it is the power supply because of this. Any other possible things that could be the cause?
 
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C12Friedman

C12Friedman

Glorious
Jan 25, 2012
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It's precisely what I would think having seen many threads about CX models failing, the problem with the CX models is the use of less than stellar capacitors in the secondary* which has lead to an early demise in many cases. It's the real factor in bringing the CX and VS models down to tier 4 on this list http://www.tomshardware.com/forum/id-2547993/psu-tier-list.html - at one year old, you should still covered by warranty. I'm sticking with the RMA thing here

* a cost cutting measure used in many entry level PSU models (not exclusive to Corsair's CX or VS series of PSU's)
 
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Solution
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OCG123123

Reputable
Dec 24, 2015
3
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4,510


Alright, I'll see if I can still RMA the power supply. Thanks for the help!
 
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