Won't turn on with 4pin cable

[abn62]

Hello guys this is my first post here.

Hello people My pc isn't turning on when I have a 4 pin atx cable connected into the motherboard with the 20 pin cable.When I press the power button The fans spin for 2 seconds then turn off.
But when I take the 4 pin cable out and leave the 20 pin cable in, the pc turns on normally but my monitor can't get any signal through VGA cable.

This all started after I had gotten a new 700W psu

Could anyone help me out please? thanks.

 

[o1die]

I would put the old power supply back in if it still works, or rma the new 700w ps.

 

[abn62]

The problem is I don't have my old power supply anymore I had gotten that power supply a few months ago but didn't u my pc till yesterday.

anymore solutions?

 

[abn62]

My older power supply burnt out and I had to get it replaced.

 

[henydiah]

What is your vga hungry power ? What kind brand and psu, vga, motherboard , cpu ? System detail please

 

[Motopsychojdn]

The 20+4pin plug has the 20pin and a seperate 4pin block, right next to each other,
these are the ones you are plugging in together yes?
you have plugged in the seperate 4/8pin cpu block near the cpu?
and wired up your frontpanel blocks correctly?
as Heny asked, model specs and any details you can think of that may shine light for us to help you
Moto

 

[o1die]

The last poster is making a good point. don't use the leftover 4 pin connector that can be broken off most 24 pin clusters; use the separate 4-8 pin lead which can be broken up into two sections, or used as one 8 pin connector on newer boards.

 

[abn62]

My spec isn't that great previously I had a 500w supply which burnt out so it got replaced

I tried with some stuff removed like my gfx cArd and hdd and all DVD roms.

I really don't know how much my pc is hungry il write what il know about my specs.

Gfx card: nvidia geforce 7600gs

Processor: intel celeron D 3.1 ghz

And my board is quite old I got it replaced last year because it burnt out, I really ain't 100, all I see is, asrock fsb1066 presler Conroe motherboard, I think at least.

And my 20pin socket isn't next to my 4 pin socket.

My pc is wired properly I've checked all that

My psu is: alpine 700w silent power.

 

[abn62]

My Vga cable is also new it's a logic lsvga310 cable, I had replaced that because my previous via cable had a bent pin.

 

[abn62]

Yep just found my motherboard model its a presler Conroe 775i65g

 

[Motopsychojdn]

Ok, I think things are getting mixed in translations here,
run through http://www.tomshardware.co.uk/forum/274745-13-step-step-guide-building
and double check connectors/ connection points,
is this your mobo btw?
http://www.bing.com/images/search?q=presler+Conroe+775i65g&view=detail&id=BDEE767408119EBC97973D63329123F74412105B&first=0&FORM=IDFRIR
Moto

 

[abn62]

Sorry about that but can't edit my posts

Here's a link to the info of my mobo

http://www.asrock.com/mb/overview.asp?Model=775i65G

 

[Motopsychojdn]

Yes, looks to be the same one I linked, ok

make sure your mobo is mounted on the standoffs correctly (or if out of the case, on a bit of card)
Your psu, the big connector 20+4pin, slide off (if attached) the 4pin section and forget about it, the 20pin block, you know where that goes,
the 4pin socket up by the pink box at the top, is your cpu power socket, you will have a 4pin 12v line on your psu http://www.envizage.com/products/power-supplies-alpine/alpine700w-alpine-700w-quiet-silent-pc-power-supply-psu-black-red.html
that plug goes in that socket,
now either hook up the power button or short the pwr and gnd on your front panel header on the mobo, you should see life
if you dont have the 4pin plugged in, theres no power to the cpu, so nothing will happen other than fans kicking in
Moto

 

[henydiah]

Ok, well according to the Asrock website, that board
only has 1 x PCI Express Graphics slot (@ x4 mode) and 1 x AGP 8X slot, so no, any card that requires
PCI-E x16 won't work.
www.asrock.com/mb/overview.asp?Model=4CoreDual-VSTA

 

[abn62]

Yes, looks to be the same one I linked, ok

make sure your mobo is mounted on the standoffs correctly (or if out of the case, on a bit of card)
Your psu, the big connector 20+4pin, slide off (if attached) the 4pin section and forget about it, the 20pin block, you know where that goes,
the 4pin socket up by the pink box at the top, is your cpu power socket, you will have a 4pin 12v line on your psu http://www.envizage.com/products/power-supplies-alpine/alpine700w-alpine-700w-quiet-silent-pc-power-supply-psu-black-red.html
that plug goes in that socket,
now either hook up the power button or short the pwr and gnd on your front panel header on the mobo, you should see life
if you dont have the 4pin plugged in, theres no power to the cpu, so nothing will happen other than fans kicking in
Moto

But my 4 pin 12w cable is already in that socket, which is the problem when I turn it on the fans spin for a millisecond then turn off .

 

[Motopsychojdn]

Yup, at least now we know your putting the right plugs into the right sockets though,
As Heny points out, your pcie slot isn't compatible with a 16 lane card
have you tried putting it through the onboard graphics? does it work fine through that?
Moto

 

[abn62]

the onboard graphics also doesn't work here ive uploaded a video of my problem here hope its atleast abit helpfull hopefully.

http://www.youtube.com/watch?v=dcMtuAoVnBI

sorry about my brother shouting in the background.

 

[Motopsychojdn]

hehe np on the lil bro score,
ok, that extender you have on the 4pin cpu line, is the wiring EXACTLY the same from that as it is on the original plug? or do they cross around to different pins?
try and get the original 4pin from the cpu to the cpu socket with using the extender if you can, even if it means unscrewing the psu from the case, just to check

Moto

 

[abn62]

I've tried it removing the motherboard from the case and not using the extender, unfortunately this problem is still an ass which I mean by still no luck

And the extender is the exact same one one that is from the CPU Line.

 

[abn62]

About my card in the pcie slot not being compatible how come that card has worked for me for like 2 years now?

 

[Motopsychojdn]

Im inclined to think its dead mobo time I'm afaid, if you've had it outside the case with no shorting possibilities, its something more fatal imo

Moto

 

[abn62]

Could you recommend me a good motherboard or should I get the same one? And btw about the shorting possibilities what do you mean by that?

 

[Motopsychojdn]

by breadboarding 'i.e' testing outside the case you are working on a non-conductive surface like a breadboard or bit of cardboard,
this eliminates the possibility that your mobo is shorting out on the case

We need your exact cpu model as celeron D covers a couple of sockets
http://en.wikipedia.org/wiki/List_of_Intel_Celeron_microprocessors
if its an older model, I reckon ebay or craigslist is probably your best bet
Moto

 

[o1die]

The bare bones out of the case testing is what I also suggest. That's such an old board that bad caps could also be an issue. Those funky dual video/dual ram slot boards are sometimes more difficult to work with.