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Motherboard has power but isn't booting


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#1 Cenfath

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Posted 05 August 2012 - 09:03 AM

Okay so I bought an EVGA Z68 SLI 130-SB-E685-KR LGA 1155 Intel Z68 SATA 6Gb/s USB 3.0 Intel motherboard but long story very short: I get the new motherboard and processor in and the darn thing doesn't boot. The board supports i7/i5/i3 processors. I purchased an Intel Core i5-2500 Sandy Bridge 3.3GHz LGA 1155 95W Quad-Core processor. It's getting power, I just can't get it too boot and it's not showing post codes. I'm really at a loss. This is just my second build but I had no issues with my first at all and I'm quite fearful of touching it at this point.

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#2 rotor123

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Posted 05 August 2012 - 09:14 AM

Some basics, some really basic.
1. Make sure your exact CPU is supported, may need a BIOS update.
2. Make sure the 24 Pin and the 4 pin power is plugged in.
3. Make sure the memory is compatible..
3a. Make sure the memory is the right slots.
4. Make sure there are no misplaced brass standoffs between the board and the case.
5. Really basic make sure the board is mounted using standoffs and not bolted to the case, I've seen it.
6. Put the board and power supply on a non conductive surface and try it outside the case.
7. Make sure the case power switch is connected to the boards power switch connectors.
8. Make sure the AC cord is a good one, I've seen bad ones.
9. Make sure the power supply is switched on.
10. Try the memory one at a time in case one is no good.
11. sometimes the board is just DOA (Dead on Arrival).

Good Luck
Roger

Edited by rotor123, 05 August 2012 - 10:54 AM.

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#3 Cenfath

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Posted 05 August 2012 - 10:25 AM

Okay so let's go through this until I run into an issue.

1. CPU is compatible. The board does not support Ivy Bridge at the moment though. A BIOS update? I understand what it is. I've never had to do it. Can you explain please?
2. Looking at the board I see a 24 pin and an 8 pin but no 4 pin.

#4 rotor123

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Posted 05 August 2012 - 10:53 AM

Sometime there is a 8 pin instead of a 4 pin. in this case the 8 pin and the 24 pin both need to be connected. If you don't have the 8 pin on the power supply, read the manual, usually you can get by with a 4 pin, not always however. The 8 pin has four power and four ground connected each set of four in parallel.

Whatever you do, do not connect a 6 pin PCIe video card power connector to the motherboard.

Sometimes a motherboard can support a chip that came out after it was sold but only with a Bios upgrade. In that case usually the note on the bios will say. However if that is true, then you have a catch 22 situation. You can't update the bios without posting and you can't post without the update. If that happens then you need to use a older CPU to do the upgrade. Hopefully not the case.

Tech support should be able to tell you if that is the case.

I'm adding number 11. sometimes the board is just DOA (Dead on Arrival).

Good Luck
Roger

Edited by rotor123, 05 August 2012 - 11:25 AM.

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#5 Cenfath

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Posted 05 August 2012 - 11:07 AM

"Whatever you do, do not connect a 6 pin PCIe video card power connector to the motherboard."

What is that? :blink: I'm so new to all of this I'm still learning. I wasn't expecting to have this problem when I started this. O.O

Am I understanding correctly by stating that if I can't use the four pin that I need to purchase a new power supply unit?

#6 rotor123

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Posted 05 August 2012 - 11:27 AM

No I'm saying that at a minimum you need a 4 pin and the 24 pin. I'm also saying do not use a 6 pin as it can cause damage.

If it works with the 4 pin and the 24 pin, then two options change power supplies or good computer store can supply a adapter to use a 4pin on a 8 pin plug. The reason for doing that is to prevent possible damage to the motherboard connector in the long run. In the short run it should work OK.

If you do not have anything in the 4 pin socket (8Pin) socket it will not work as that is what supplies power to the CPU. No Power to the CPU no work. The 24Pin pretty much supplies power to the rest of the motherboard.

So try the 4 pin and the 24 pin and see what happens.

Luck
Roger

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#7 coxchris

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Posted 05 August 2012 - 04:43 PM

Make sure you have the CPU fully inserted and lock. I did that once

I had power all the fans spins and CD light was flashing. It was the CPU.

Do you have some power like the above situation?

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#8 Cenfath

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Posted 08 August 2012 - 10:02 AM

Okay so apparently the CPU just wasn't getting enough juice. I replaced the psu with 850W power supply. My old one was stock that came with my case and was 450w. Probably a bonehead move to not replace it in the first place.

Now I've got it on. The post code it's showng is d6 which after looking it up it apparently means there's no video card being detected. I tried it in a different slot and it's still posting d6. Is there something I should/could try? Or should I just replace the video card?

#9 coxchris

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Posted 08 August 2012 - 10:18 AM

what is the graphic card name

Sometime having dual output card the computer doesn't see the output. Try switching the cable to the other output.

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#10 Cenfath

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Posted 08 August 2012 - 10:54 AM

The video card is the only thing I didn't replace on the new unit though I probably should have. It's by EVGA. Since I don't know what information you need this is copy and pasted: EVGA 01G-P3-N981-TR GeForce 9800 GT 1GB 256-bit DDR3 PCI Express 2.0 x16 HDCP Ready SLI Support Video Card

Can you explain switching outputs. I really mean what I said about bein a completel novice who is likely in over her head. :whistle:

#11 rotor123

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Posted 08 August 2012 - 11:02 AM

A Simple question, did you hook up the 6 pin power cable to the video card? It won't work without it.

Switching ports would be moving the cord from the monitor to the other DVI on the video card. I usually use the one nearest the outside of the case.

Good Luck
Roger

Edited by rotor123, 08 August 2012 - 11:03 AM.

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#12 Cenfath

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Posted 08 August 2012 - 11:46 AM

Yes the 6 pin is definitely connected.

Switching ports didn't work unfortunately.

#13 rotor123

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Posted 08 August 2012 - 11:58 AM

Time to see if you can borrow a card to test. Since it would probably be prudent to be sure the card is bad first.

Good Luck
Roger

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#14 Cenfath

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Posted 08 August 2012 - 12:22 PM

I have no idea who I would borrow a card from. I'm the only person I know locally that will build a system unless a local store is willing to let me bring it in and plug a card in for me. :P lol

Edited by Cenfath, 08 August 2012 - 12:23 PM.


#15 Cenfath

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Posted 10 August 2012 - 12:29 PM

Okay, so it looks like the video card went out. The new one is working just fine but Windows 7 isn't loading. It takes me to a screen that wants me to launch a repair utility? What gives?




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