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Newly built computer.. wont boot or beep I need help

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  • New Build
  • Computer
  • Motherboards
  • Systems
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August 18, 2011 2:03:53 AM

I built my own computer today took me a total of 3 hours to assemble everything togheter and do the wires and all. Setup all the wires correctly double checked everything made sure to ground the motherboard before installing, added up the CPU correctly as showed in the pictures added to cooling system for the CPU then, Installed the Rams and the Graphic card plus my SSD and HD + CD-rom... Starting up the power All fans powerup Graphic cards fan starts HD and SSD lights opens up too CPU fan powers up aswell Everything works exept for the Motherboards lights and beeping that says its starting up... Sadly I tryed almost everything and still nothing.. I have hopes thats my Motherboard is still okay and im just mistakin wires but sadly too I am sure I plugged everything right I tryed 1 Memory bar at a time both togheter tryed running without Gigs and Graphic card tryed only running the Power supply with the motherboard still nothing...

My computer spec all matches togheter theres nothing wrong with the system either! So I have no more idea on how to fix it if anyones got ideas! I'm all out of them! Please tell me its fixable either ill have to reship my Board from Canada back to New Jersay and wait for an other week before being able to play games

More about : newly built computer wont boot beep

August 18, 2011 2:08:18 AM

Did you make sure the plug the built in case speaker to the correct slots on the motherboard? I assume you at least have the power and reset correct if the power button is working.
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August 18, 2011 3:47:12 AM

Yes all the wires are correct. But still I dont know what might be the issue here.
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August 18, 2011 4:13:24 AM

Which mobo are you using?
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a c 156 V Motherboard
August 18, 2011 4:24:41 AM

When you are asking for help, always start off with the system specifications.

The Great Karnack is dead. We need you to tell us these things.

Review this build it yourself thread:
http://www.tomshardware.co.uk/forum/274745-13-step-step...

Then onward to some systematic troubleshooting techniques.
If a new build, start here:

Work systematically through our standard checklist and troubleshooting thread:
http://www.tomshardware.com/forum/261145-31-read-postin...
I mean work through, not just read over it. We spent a lot of time on this. It should find most of the problems.

If no luck, continue.

If a not new build (a formerly working computer), start here:
The following is an expansion of my troubleshooting tips in the breadboarding link in the "Cannot boot" thread.

I have tested the following beep patterns on Gigabyte, eVGA, and ECS motherboards. Other BIOS' may be different, but they all use a single short beep for a successful POST.

Breadboard - that will help isolate any kind of case problem you might have.
http://www.tomshardware.com/forum/262730-31-breadboardi...

Breadboard with just motherboard, CPU & HSF, case speaker, and PSU.

Make sure you plug the CPU power cable in. The system will not boot without it.

I always breadboard a new build. It takes only a few minutes, and you know you are putting good parts in the case once you are finished.

You can turn on the PC by momentarily shorting the two pins that the case power switch goes to. You should hear a series of long, single beeps indicating memory problems. Silence indicates a problem with (in most likely order) the PSU, motherboard, or CPU. Remember, at this time, you do not have a graphics card installed so the load on your PSU will be reduced.

If no beeps:
Running fans and drives and motherboard LED's do not necessarily indicate a good PSU. In the absence of a single short beep, they also do not indicate that the system is booting.

At this point, you can sort of check the PSU. Try to borrow a known good PSU of around 550 - 600 watts. That will power just about any system with a single GPU. If you cannot do that, use a DMM to measure the voltages. Measure between the colored wires and either chassis ground or the black wires. Yellow wires should be 12 volts. Red wires: +5 volts, orange wires: +3.3 volts, blue wire : -12 volts, violet wire (standby power supply): 5 volts always on. Tolerances are +/- 5% except for the -12 volts which is +/- 10%.

The gray wire is really important. It should go from 0 to +5 volts when you turn the PSU on with the case switch. CPU needs this signal to boot.

You can turn on the PSU by completely disconnecting the PSU and using a paperclip or jumper wire to short the green wire to one of the neighboring black wires.
http://www.youtube.com/watch?v=5FWXgQSokF4&feature=yout...

A way that might be easier is to use the main power plug. Working from the back of the plug where the wires come out, use a bare paperclip to short between the green wire and one of the neighboring black wires. That will do the same thing with an installed PSU. It is also an easy way to bypass a questionable case power switch.

This checks the PSU under no load conditions, so it is not completely reliable. But if it can not pass this, it is dead. Then repeat the checks with the PSU plugged into the computer to put a load on the PSU.

If the system beeps:
If it looks like the PSU is good, install a memory stick. Boot. Beep pattern should change to one long and several short beeps indicating a missing graphics card.

Silence, long single beeps, or series of short beeps indicate a problem with the memory. If you get short beeps verify that the memory is in the appropriate motherboard slots.

Insert the video card and connect any necessary PCIe power connectors. Boot. At this point, the system should POST successfully (a single short beep). Notice that you do not need keyboard, mouse, monitor, or drives to successfully POST.
At this point, if the system doesn't work, it's either the video card or an inadequate PSU. Or rarely - the motherboard's PCIe interface.

Now start connecting the rest of the devices starting with the monitor, then keyboard and mouse, then the rest of the devices, testing after each step. It's possible that you can pass the POST with a defective video card. The POST routines can only check the video interface. It cannot check the internal parts of the video card.
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August 18, 2011 4:37:25 AM

As for the specs...

Gigabyte 990FXA-UD3 AM3+
Gigabyte HD 6950 1GB DDR5
Phantom II Quad Core AM3
Corsair Gaming Series 600W
Patriot 2x4Gig Memory Cards
OCZ SSD 60Gb
Seagate 500Gb HD
Multiple LED fans (4)
LG CD-ROM

I just got a chance to get on the computer due to brother using it I will start reading up right now I can't wait to see if I can fix this and play!
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August 18, 2011 4:55:15 AM

I did all those tests so far nothing yet... no change might consider removing everything and starting over ill test each componnent one by one tomorrow.. Ill try to Breadboard it too to see if it might be a fried motherboard
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August 18, 2011 4:37:05 PM

Help please
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August 18, 2011 5:38:00 PM

bump
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August 18, 2011 5:51:24 PM

did you go through the steps from the Trouble Shooting thread linked above?
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August 18, 2011 7:32:00 PM

Yes I did and nothing worked everything failed
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August 18, 2011 9:19:51 PM

I am really new, but does your mobo have any diagnostic displays or lights?

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August 18, 2011 10:31:22 PM

No lights no sound no movement
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August 18, 2011 11:34:13 PM

Maybe if you list what steps you have tried so far and what the results were someone might have an idea of how to help you out?
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August 19, 2011 2:43:41 AM

Ive tryed only running the motherboard with a single memory stick the hard drive and the power supply didnt do anything

tryed running the motherboard with 2 memory sticks the hard drive and the power supply still nothing

tryed also only running the motherbaord with the power supply see if any lights or error sounds would come up and nothing

tryed the Breadboard solution nothing happened

tryed almost everything in my power... now I think I have no choice but to return it to Newegg with the fee of 23$ for the shipment back in NJ sadly... ill have to wait an other week before trying again see if any changes occur! and an other question just like that... since I already installed the CPU on the Mobo should I send both togheter back for not a refund but for new ones?
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August 19, 2011 3:58:14 AM

Well, I believe that you will need to remove your CPU cooler and take the CPU out of the socket. You'll want to clean the top of the CPU to remove any thermal grease if you are going to replace it.

Just out of curiosity, did you try using another PSU yet?
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!