Issues with motherboard/booting

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WaffleGuy

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May 7, 2014
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Hi everyone,

I realize that this has been asked before, but I thought that it would be different for my own set of specs. I apologize otherwise.

I have just bought some computer parts 2 days ago, they are as following:
i5 4670 processor
gtx 770 graphics card
asus z87-a motherboard
Corsair 8g ram
nzxt 410 case
and a cx750 power supply.

- seeing that it's still brand new, I don't really want to accept reasons like "defective gear", most likely it's something i did wrong.
- I was able to assemble everything fine, +led and - led, power switch, reset switch is all in place according to the manual.
- I did hook up the 24pin and the 8pin to the motherboard from the power supply.
- I plugged a hdaudio port into the AAFP port, and a usb 2.0 into one of the three usb slots.
(I don't think there is any more things for starters)I think the computer should at least be able to turn on, but when I press the power nothing happens, as perhaps the other posts, there is only a LED light on. However, when I plug in external devices like a usb mouse or keyboard, they show up fine since my mouse lights up showing it's working.
- i did add stand-offs onto my motherboard.
- There is a 4pin above my PW switch and reset switch of which I can't find the plug for, is that needed?
What am i doing wrong here? Any pointers/help would be greatly appreciated.

Thank you.
 
Solution
bgunner


there are but if no other leds come on then either a bad PSU or bad mother board. The other LED's help with diagnostics. if they turn red and stay on then that part is causing the issue with booting. The big green led that is lit just says that there is power hooked to the board but that is all.
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bgunner

bgunner

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OK the 4 pin above your front panel header is for a case fan and is not needed to run. That motherboard should have the green light at the bottom constantly lit showing it has power. There are also other smaller LED's scattard on the board do any of these light up?
 
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Dogsnake

Dogsnake

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You did not say but I figure you installed the memory. Does the cpu cooler fan spin or any other fan? Check to see that the 24 and 8 pin are all the way into their sockets. The 24 should snap in and lock down. Did you install the cpu?
 
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WaffleGuy

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Yes I installed the CPU, nothing runs when I press power, not even fans. I pressed the 24pin in quite hard, not sure if i heard snap or not...
And no, only that one LED above the + and - PLED is on. I don't think I noticed other LED's on the board though...
 
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bgunner

bgunner

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there are but if no other leds come on then either a bad PSU or bad mother board. The other LED's help with diagnostics. if they turn red and stay on then that part is causing the issue with booting. The big green led that is lit just says that there is power hooked to the board but that is all.
 
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WaffleGuy

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Thanks, but I really don't want to believe that it's defective gear as I just bought them brand new 2 days ago. There is no way that I can break them because there is something I didn't hook up is there?
 
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bgunner

bgunner

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as long as the heatsink is attached to the CPU you wont hurt anything. If the 8 pin and 24 pin PSU cables are hooked to the motherboard properly, CPU is installed correctly, ram is installed fully then you should be able to boot into the Bios. no other parts are necessary for the bios to show.

denying the fact parts can be bad from the manufacture is a foolish move. parts can be tested good at the factory and by the time you purchase them they can break. This is a hazard with many things but electronics are more susceptible to it.
 
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WaffleGuy

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How fragile is the CPU? Is there a possibility that one or two pins may be bent while being put on the motherboard? I've looked, i think that there is just that one LED on the motherboard.
So far it just looks like power isn't going through, is there some way that you might accidently fry the motherboard? The first time i hooked it up onto the case i didn't use standoffs, then added them after.
Perhaps I should apologize for putting a slightly misleading title, but booting doesn't come in yet, the computer won't even turn on, even when I plugged in everything. I really hope i didn't somehow break the power supply or motherboard, they will not fry or burn if I accidently miss out a pin or connection somewhere?

Thanks
 
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junkeymonkey

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''denying the fact parts can be bad from the manufacture is a foolish move''

so true

I would recheck this----I was able to assemble everything fine, +led and - led, power switch, reset switch is all in place according to the manual.

then to see if the power switch is not at fault I would jump start the board from the pins to see if it busts off [be careful ] that front case push button switch may just be bad
 
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bgunner

bgunner

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the led's are very small unlike the big green one at the bottom. one is under the south bridge for the boot device, one near the ram for the ram, one near the CPU for the CPU and possibly one near the PCI-e x16 top slot for the gpu. they are there, as I can see them in the pics of the motherboard.

By not using the standoffs you may have damaged the motherboard and or CPU but usually hurts the motherboard most times. the standoffs are to prevent the case from transferring electricity from one part to another on the board.

the system booting is when the system powers on and passes the post test. Not just going into windows, this is booting windows.
 
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WaffleGuy

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Sorry, how silly of me, there are indeed more led's on the board, just not looking like the big green one. Then again none of them lights up, except the big green one.
The computer never turned on before, so would the motherboard still be damaged this way without standoffs?
And I am sorry, what(/where) exactly do you short for a jump start? I am completely clueless when it comes to hardware.
 
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junkeymonkey

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at your risk---- the two pins + and - on the board that the switch plugs on to just bump short them [pocket knife ,small screwdriver , paperclip] and that's all the switch does . it just takes a quick bump to start .. I hate to explain this with out kinda being hands on if its your first time .. but theres got to be a first time for everything....
 
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Dogsnake

Dogsnake

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It is common for the 24 pin connector not to be all the way in. Can you post a photo? If not look closely at it. If you try to remove it from the MB, you should not be able to. If it is correctly seated there is a locking tab that would need to be lifted to unplug it. So if you can unplug it is not in all the way. If this is the case then try gently rocking the plug as you press it in. There is usually a very definite click as the tab clears notch on the plug.
 
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bgunner

bgunner

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Did you try to power on the system when you did not use the stand offs?

If shorting the power pins together does not start the PC I would try a different PSU, If this does not help then RMA the motherboard and tell them it was DOA and do not mention the standoffs.
 
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Dogsnake

Dogsnake

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A bit confused here. Did you assemble the system without stand-offs; attach power supply and plug it in; and turn the PSU switch on? Then reassemble with stand-offs? If so yes you could have damaged the MB and PSU by doing this. More likely the MB.
 
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junkeymonkey

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I hear folks say that they ''tested on the motherboards box'' and wondered about that . I thought the stand offs were ground points for the board and needed to be used to fire it up ? I always install the board correctly in the case before I shoot power to it that's just my thinking on that.
 
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WaffleGuy

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Problem solved, It turns out that SOMEHOW, I DON'T KNOW, the Ram wasn't put in properly, although it seemed that it did. I took the ram out and put one of the two on a different slot, and tried booting, and it boots. I put the both back in, and it works. It also was because of a jumper i believe, i foolishly took off.

Thank you kind sirs for all your help; and contribution. just installed windows and things are fine, I am in love. Time for me to go try gaming in high graphics.
 
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bgunner

bgunner

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good luck. But out of curiosity what jumper did you remove? there are usually 2, one for the clr_cmos and one for pwr_usb. the first will cleatr the bios and the other will stop the power to the USB ports when turned off. Just my guess is the clr_cmos jumper.
 
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WaffleGuy

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Yes, the jumper cap i Foolishly removed is the CLR_CMOS jumper.
 
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