Newly assembled PC won't power on - AT ALL!

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Pretty_Lintu

Pretty_Lintu

Commendable
May 5, 2016
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0
1,510
Hello everyone! I hope I can explain my problem well enough for someone to assist me!

Following what I've seen on here, I'll list my Components, and also their condition in case there is an issue:

-Corsair Carbide Air 240 Cube case (used, perfect condition)
-AMD FX 6300 CPU (donated by a friend, used by him aug 2015-april 2016)
-Gigabyte motherboard GA 78LMT USB3 rev 5 (new, Ebay)
-EVGA 80 Plus 500W Bronze Power Supply (new, Ebay)
-Western Digital 1TB 1000GB 3.5" HDD (refurbished, Ebay)
-HyperX FURY Series 8GB DDR3 1333MHz (new)
-EVGA GTX 760 sc (used, Ebay)

Gotta Love Ebay 😉

So I built my pc today, and when the power button is pressed, there is NO activity (no LEDS, no beeps, no case fans etc) aside from one spin of the CPU fan.

-First thing I did was use a screw driver to complete the circuit, with no joy. then I tried a different 5A fuse in my PSU plug which gave me the same one-spin CPU fan as before.
-I removed my heatsink and re-attached it, in case I'd made some error there, but the results were the same.
-Also, my motherboard is not touching my case; (the gap created by the motherboard screw-stands is about a fingers-width)
-I have checked my connections thoroughly, but I will be taking it all out and re-connecting everything outside of the case.

I fear its my motherboard, as there must be SOME tiny burst of power getting to my CPU fan before cutting out.

(Just as a few side notes, my HDD is not connected as of yet, as I was missing a SATA cable, picking one up in the morning. Also I require a fan adapter, as my MB only has one slot, and my GPU is in the mail! The on-board mb graphics will suffice until then!)

I'd appreciate any suggestions as to what my problem could be -and a resolution would be a bonus!

- Sophie-Leigh
 
Solution
superninja12
your power supply is not modular so forget that word.

okay ill make a small list that u need to check.
https://gyazo.com/347826de6d5c8937f9f408e64e59c155

- cpu into place
- ram into place (pull the 2 slides up and put the ram down u ear 2 clicks when its into place,notches will slide back.)
- stock cooler place cable into the cpu pin slot.
- 24pin cable on the motherboard.
- 4 pin cpu cable on the motherboard.
- sata ata power to hdd.
- sata cable from hdd to motherboard

make sure the 6 little pins are correctly in spot (read manual) and give it a go.
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Thank you for the reply, I'll go over this in the morning, and get back to you! :)
 
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If you have ever watched the ols Star trek series there is one famous saying said by scotty the engineer.
" I cannot do it captain, I need more power !"


In any case you should check these three points bellow making sure power is connected to the motherboard and the GTX 960 card you have.
I have included a link to the motherboard with a picture so you can clearly see two of the power connectors from the power supply unit that must be connected to the motherboard.

http://www.gigabyte.com/products/product-page.aspx?pid=4305#ov


1.The first power block from the PSU is to the 24 pin 12v ATX connector of the motherboard.

2.The second is just as important, as failing to connect it results in the motherboard not powering up right if not connected.
If you look at the picture you will see the white coloured eight pin block, the eight pin block must be connected to this from the PSU.

3. The Nvidia GTX card requires that you connect the six pin 12v Pci-e power connector from the Psu to the card.
The connector block is often hidden or obscured by the cooling solution, or the fan shroud of the card.
And can be found either on the back edge of the card, or the cards facing edge to you when inserted into the Pci-e graphics card slot of the motherboard.

Again you must connect this as the system will fail to power up and produce a screen image on the monitor.

If it still does not work.
Then the cause can, or will be that the current power supply does not have enough wattage to drive the system with all of the components fitted to the motherboard such as the GTX 960 graphics card.

You may have to invest in a higher wattage PSU or test the system with a borrowed PSU of a higher wattage.
 
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UPDATE

Thank you for all the responses, I'm afraid nothing so far jumps out as being my problem.

I removed everything, and re-assembled. Everything is where it should be, I'm 100% certain of that, and, I've added my HDD and all three fans are now connected using an adapter which goes in to my SATA as well as my MB.

When I press the power button, I get the same CPU 1 second fan-spin, but as my case fans are connected to my PSU, they too also flash and spin once, before once again, nothing happens, so for a brief moment everything gets power, but again, not a single sign of life from my Motherboard.

My dad is going to bring round an old pc, to test the parts tomorrow, but until then, there is no change, and I'm stuck with a rather large, expensive paper weight!

 
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Hi, I've gone over everything again and again, nothing is missing or displaced. As I just mentioned , I am getting very brief power to all my fans, but nothing else happens... :/
 
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Hi, thanks for the information, and your endearing use of Star Trek Quotes 😉

it was all useful, but I have literally ticked off everything suggested as 'done'

As for my power supply, its 500W as mentioned, which, upon using multiple online calculators and such, should be more than enough to run it let alone get it to boot!

very sad still. :/
 
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I've just pulled everything out, tried my psu and motherboard out of the case, with just the CPU and RAM, using a screwdriver to turn it on - it does exactly the same thing as when its in the case... I don't really know where this leaves me. 🙁
 
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Is the PSU modular did you plug in all CPU power sockets? Did you make sure you plugged the power into CPU and not GPU extra power socket on the back of the PSU?
 
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I'm afraid I don't know what you mean by modular? but power sockets - yes I have the 24 pin and an 8 pin, both plugged in properly. I bought an other motherboard today to try and eliminate possible culprits, this new motherboard did exactly the same thing.

So I'm now thinking its either my PSU, or (doubtedly) the CPU. I will be returning my psu and trying another one shortly. otherwise I'm out of ideas
 
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I have 2 other computers belonging to my housemates, but I don't want to put them through that! lol I'm returning my psu to the seller, and getting hopefully another one the same. I bought a whole new motherboard, and the same problem persists, so i can eliminate the motherboard as the problem, so its down to psu, or cpu.
 
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your power supply is not modular so forget that word.

okay ill make a small list that u need to check.
https://gyazo.com/347826de6d5c8937f9f408e64e59c155

- cpu into place
- ram into place (pull the 2 slides up and put the ram down u ear 2 clicks when its into place,notches will slide back.)
- stock cooler place cable into the cpu pin slot.
- 24pin cable on the motherboard.
- 4 pin cpu cable on the motherboard.
- sata ata power to hdd.
- sata cable from hdd to motherboard

make sure the 6 little pins are correctly in spot (read manual) and give it a go.
 
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Solution
IT WAS MY PSU! >.<

I realized I had been ripped off - when I received my new psu - EVGA 600w, it compared it to my current one which, upon inspection was NOT EVGA 500w, it had no serial codes, no manufacture information - cheap fake sold to me as branded.

My new pc works perfectly now! I love it.

Thank you for all of your suggestions - it's good to know for the future!

-Leigh
 
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EVGA are a good brand. I have always used corsair/EVGA psu... I just got given a cheap knock off was all. I've got my refund now anyway so its all fine :)
 
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I'm sorry but you are talking about a subject you don't know much about

- corsair makes high end quality power supplies that are great for gaming ( RMX RMI AX AXI) however they also build junk poweruspplies that can explode or will shorten the lifespan of your components. also not all power supplies are made by corsair themselves.

- evga is different they don't manufacture any power supply themselves they just put a sticker of their brand on the powerspplies.

they branded some excellent power supplies hat are made by seasonic (evga supernova gs) or super flower(g2 p2) .

but their lower units mostly manufactured by HEC are awful power supplies and u don't want them in your expensive rig. About your power supply http://www.overclock.net/t/1500086/why-you-should-not-buy-an-evga-400-600-and-500b-600b

- would you like to power all of your expensive components by a unstable power supply?
 
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