power supply choices

Paul Merchant · Dec 10, 2013

CPU: Intel Core i7-34770K 3.5GHz Quad-Core Processor
CPU Cooler: Corsair H80i
Motherboard: msi gaming gd65
Memory :corsair vengeance Series 16GB (4 x 4GB) DDR3-1666 Memory
Storage: 120 gb samsung ssd
3 7200 hard drives
Video Card:tow gtx 660 2gb
optical drive; lg blue ray drive
psu ;corsair cx 750

should i get a bigger psu ???

tiny voices · Dec 10, 2013

No, that PSU is overkill as it is. Your computer will use less than 400w.

Have you built or bought this yet? Is it for gaming?

Paul Merchant · Dec 10, 2013

built it

when i turn y pc on it turns on for about 3 seconds and then back off and it keeps on doing this over and over again.
If i turn the pc on and wait for the pc to turn of the first time and hold the power button then the pc turn on and works as it should

and i get that problem and its for gaming

Paul Merchant · Dec 10, 2013

and i get that problem

tiny voices · Dec 10, 2013

Well that PSU is WAY more than enough for your computer. If you replaced it I would definitely recommend going DOWN in wattage to 550w.

Paul Merchant · Dec 10, 2013

ah i seee u got any idear why its doing the power thing

tiny voices · Dec 10, 2013

Are you 100% positive everything is plugged in correctly?

Paul Merchant · Dec 10, 2013

yes i have made sure everlything is pluged in

every so often whn i press cmos the pc powers on fine

tiny voices · Dec 10, 2013

Try booting with a single stick of RAM. If that fails try another stick.

Paul Merchant · Dec 10, 2013

i ahve tryed everything i have tryed with no graphics cards and it stll does it so i dont knw

tiny voices · Dec 10, 2013

But the computer does work perfectly fine once it boots up?

Paul Merchant · Dec 10, 2013

after i have held the button after the first time it truning on yes it works fine

tiny voices · Dec 10, 2013

And can you run intensive games or programs and the system is perfectly stable?

Paul Merchant · Dec 10, 2013

yes i can it jsut annoying having to do the power bit

tiny voices · Dec 10, 2013

The PSU is not the issue here. It could be the motherboard or even the power button (unlikely).

Paul Merchant · Dec 10, 2013

ok then any idear what i could do

Paul Merchant · Dec 10, 2013

what i don't understand it still does it when there's no graphics cards in it

tiny voices · Dec 11, 2013

It could be your motherboard or your RAM. Run memtest for 6+ passes to test the RAM and make sure it is ok. We just need to start ruling things out at this point.

Are you 100% positive you don't have ANYTHING connected wrong? Many times people connect the floppy connector on the PSU to a fan connector on the motherboard or conenct a fan to the motherboard AND the PSU. Both of these can cause this issue. Also, how are your h80i fans connected to the motherboard? To the CPU fan header? If not, an nothing is connected to the CPU_FAN connector, it can cause this problem.

Paul Merchant · Dec 11, 2013

i am sure everything is connected properly it even says on the cables where to put them.
the h80i is connected to the cpu_fan1

aloso if i hold the cmos button whn the pc is of and turn on the pc it turns on straight away

tiny voices · Dec 11, 2013

Replace the CMOS battery.
that is something to try.

Paul Merchant · Dec 11, 2013

i mite of wrote the graphics card bit wrong theres two gtx 660s

tiny voices · Dec 11, 2013

Are both GPUs properly connected to the PSU? 750w is way more than enough for two 660s.

Paul Merchant · Dec 11, 2013

yes i am sure they are connected

tiny voices · Dec 11, 2013

Try replacing the CMOS battery.

Paul Merchant · Dec 11, 2013

ok thn will need to find one
i take it i am ok to powet the pc on the wy that i do ?

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