new build starts for 1-2 seconds then all power ceases

February 17, 2012 at 10:45:34
Specs: Windows 7
i just built a computer the problem is that when i press the power button all of the lights and fans will turn on for about 1-2 seconds but then will just stop. no beeps, no sparks the parts are
cpu- phenom II x4 975 black edition
ram- 2x 4gb corsair vengance
mobo- gigabyte ga-990xa-ud3
psu- coolmax cti-700b 700 watt psu
gpu- zotac geforce 560 ti X1
hdd- Western Digital Caviar Blue Hard Drive - 500GB, 3.5", SATA 6Gbps, 7200RPM, 16MB
all parts are new
ive heard it could be a blown capacitor but i have checked all of mine, all the parts are properly in place and i have all of the power plugs in correctly. this is my first build so im woried that i may have fried my mobo or graphics cards but neither of those situations make sense as the power is still flowing trough the mobo and the gpu fan still works. also it is only on for a few seconds so it cant be an overheating cpu. please help me thank you

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#1
February 17, 2012 at 11:56:44
Not the best choice of power supplies since it has three 12 volt rails. It would be much better if you purchased one with a single 12 volt rail with all of its amperage available for all of your components. I cannot guaranty that this is the problem but it is a very good possibility.
You also should have bench tested your components starting with just the basics (MB, CPU w/heat sink, one stick of memory, onboard graphics if available, and keyboard. If you do not get to post screen then switch the memory card. If you still do not get post and you are using a graphics card, then switch it for an older more basic card that you know works. If you still do not, then pull memory, remove the graphics card and listen for beep tome (motherboard speaker required). etc. Google Bench Test Computer for more details... You need to start more basic, prove it is working to that point, and add another component and retest. If it fails then either that component is bad or is not getting enough power (as in a graphics card).

You have to be a little bit crazy to keep you from going insane.


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#2
February 17, 2012 at 12:25:34
You bought relatively high end/high priced parts, then connected them all to a crappy power supply.

"it is only on for a few seconds so it cant be an overheating cpu"

Oh yes it can. If you applied the thermal paste incorrectly or didn't install the heatsink properly, the temp can shoot thru the roof in a matter of seconds & cause a shutdown.

Strip the system down & start from scratch. Do the benchtest like you should have done in the 1st place.

http://www.techsupportforum.com/for...


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#3
February 17, 2012 at 12:33:52
thanks ill get back to you on the bench test. also if it is the power supply could you recomend a better one that will also be sli compatible. for future upgrades. also my mobo has no onboard graphics so i cant boot up without my video card

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Related Solutions

#4
February 17, 2012 at 12:51:13
Corsair PSU are good, prices start around $70

Googling is quicker than waiting for an answer....


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#5
February 17, 2012 at 18:37:18
alright so i now have it working but there is no video output. also when i take all RAM out there is no beep, i hooked up my audio and even put in speakers but nothing happened

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#6
February 17, 2012 at 19:30:37
"when i take all RAM out there is no beep,i hooked up my audio and even put in speakers but nothing happened "


The beeps are generated by the BIOS via the mboard. Most mboards do not have a sound device built into it. There usually must be a case speaker, or a piezo sound device, connected to the right pins on the mboard in order for you to hear mboard beeps.
It's possible but quite rare for mboard beeps to be generated only through the amplified speaker ports.
When you remove all the ram, if nothing else is wrong, you will get no video but you should hear an error patten of beeps that indicate no ram installed, or a ram problem.
E.g. for an Award bios or a bios based on one, that's often a beep of about a half second, silence for a half second, a beep of about a half second, silence for a half second, continuously.

NOTE that not all ram you might think should work is compatible with installing it in your mboard. In the worst cases of incompatibility, you mboard will not boot and you hear no mboard beeps when it's installed.

"alright so i now have it working but there is no video output..."

If your ram is incompatible you get no video; or if it isn't but it has a poor connection in it's slot you MAY get no video.
.....

"alright so i now have it working but there is no video output...."

Did you REMOVE the AC power to the power supply when it was connected to the mboard at ALL times when you were plugging in or unplugging cards and ram and drives and wiring connections inside the case ?
If there was ANY time you didn't do that, you may have damaged something.

Are you SURE you have both the main 24 pin (or 20+4) power connector and the 4 or 8 pin power connector from the PS connected to the two sockets on the mboard, and that they are all the way down in the sockets ?

Have you made sure all cards and RAM are all the way down in their slots and that the metal bracket on the card is fastened to the case, BEFORE you booted the system ?
E.g, if the video card was not all the way down in it's slot; or if it was but the metal bracket was not fastened to the case, the card can easily move upwards in the slot when you plug in a cable into it - either thing can damage the card's circuitry easily.

If in doubt about the video card, try it with another computer that has at least a 450 watt PS.

Your video card has two 6 pin power sockets . Do you have two 6 pin connectors going directly from the power supply's built in wiring to those ?

DO NOT use a PCI-E Y cable wiring adapter - one PCI-E 6 pin to two PCI-E 6 pin - to connect the power supply to the video card's two sockets - that can't supply enough current.
If your power supply has only one 6 pin PCI-E connector (it may have a 6+2 PCI-E connector - the 2 pin part can be attached to or removed from the 6 pin part), use a molex to PCI-E 6 pin Y wiring adapter - two larger drive molex power connectors to to one PCI-E 6 pin connector for one of the two sockets on the card - that CAN supply the current required.

You video card's video chipset requires a recommended minimum 450 watt power supply or higher. If you got a different power supply than you originally had, what is it's power capacity wattage ?

What type of connection are you using to your monitor, or to the input on a TV ?

DVI, mini HDMI, or VGA via a VGA cable to a VGA to DVI gender adapter, or a VGA to DVI cable ?

If you're using a TV, the TV must be set to the proper input source, and if you also have a monitor connected to the computer, Windows usually only enables ONE display by default - you must Enable additional displays in Windows

If your monitor has more than one way it can be connected, you often can connect to it only ONE way at a time to the computer. The same MAY apply if you're connected a TV.

Your mboard has three PCI-E X16 slots. You are supposed to connect a single video card to the PCI-E X16 slot closest to the center of the mboard. Is that what it's plugged into ?
It may produce no video in either of the other two slots by default - see your mboard manual.


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#7
February 17, 2012 at 20:16:24
im using 2 large molex power connectors per 6 pin connector and im still not getting a signal on my monitor. im using plain dvi. all my cards are working properly just no signal on my monitor. my 8 pin power connector is in and my 20+4

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#8
February 17, 2012 at 20:25:25
Is this with the same power supply ?

If the power supply has no PCI-E 6 pin connectors , it 'may be an older model, and older models usually have more current available from +5v and less current available from +12V output(s) for the same wattage capacity than more recent models, and they may not work with recent video cards.
If ii IS a recent model, it may have PCI-E 6+2 pin connectors rather than 6 pin connectors - it looks like an 8 pin connector when the 2 pin part is attached to the 6 pin connector. If it has one piece 8 pin connectors, you can get wiring adapters for that.
............

Answer my other questions and make coments about anything else I said that would fill us in.
Copy my text, put quotes around it, and comment on it, if you need to, if you don't want to do a lot of typing.

If you get no error beerps when you remove all the ram, following the directions I just added to the beginning of the last post, you have serious problems, possibly a defective or damaged PS.


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#9
February 17, 2012 at 20:41:58
"Is this with the same power supply"
yes it is still the coolmax 700 watt

"The beeps are generated by the bos via the mboard. Most mboards do not have a sound device built into it. There usually must be a case speaker, or a piezo sound device, connected to the right pins on the mboard in order for you to hear mboard beeps.
It's posible but quite rare for mboard beeps to be generated only through the amplified speaker ports."

no case speakers on the NZXT M59

"NOTE that not all ram you might think should work is compatible with installing it in your mboard. In the worst cases of incompatibilty, you mboard will not boot and you hear no mboard beeps when it's installed."

i have checked and double checked and the RAM is compatible it is DDR3 1866 Mhz and my Mobo takes that.

also my gpu is in the pci-e slot closest to the center

if you need any more info than this please tell me


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#10
February 17, 2012 at 21:12:24
"ive heard it could be a blown capacitor but i have checked all of mine,"

The capacitors that could sometimes be a problem in the past were the larger ones on the mboard and were electrolytic capacitors, but the problem usually did not appear until the mboard was at least two years old, and on recent mboards usually most or all of those larger capacitors are polymer (plastic) electrolytic capacitors that cannot fail the same way as the electrolytic capacitors that had electrolyte (liquid) inside them and are unlikely to fail, ever.
....

"also if it is the power supply could you recommend a better one that will also be sli compatible. "

All new power supples are both SLI and CrossfireX compatible It merely requires the PS has PCI-E 6 pin and / or 6+2 and / or 8 pin connectors in the PS's wiring.

Your mboard's main chipset supports both of either SLI mode with two NVidia video chipset cards, or CrossfireX mode with two ATI / AMD video chipset cards.

"no case speakers on the NZXT M59"

There is only one case speaker if the case has one - it's mono - single channel - sound generated by the mboard.
In that case, you need to remove a case speaker from another case, or connect a tiny piezo sound device meant for computers, to the proper pins for a case speaker on the mboard - see the mboard manual - if you don't have a printed manual it's probably the same as a *pdf manual on the CD that came with the mboard, or you can download that from the Gigabyte web site..
Some mboards come with a piezo sound device you can install on those pins. If you have no such device nor a case speaker from another case to try, the piezo device is inexpensive and available locally at places that have computer pats or that repair computers.

Connect something to those pins and try no no ram boot and tell us what the result is.
......

"""NOTE that not all ram you might think should work is compatible with installing it in your mboard""

"i have checked and double checked and the RAM is compatible it is DDR3 1866 Mhz and my Mobo takes that."

What you are supposed to do is go to the web site of the ram manufacturer and look up which ram is listed for your specific mboard model, by using a ram confgurator or similar feature.
If the specific module part number of the ram you bought is NOT in the list, there is no guarantee that it will work 100% properly in your mboard ! !

" also my gpu is in the pci-e slot closest to the center"

Good !

Please answer my OTHER questons, or make comments about OTHER things I said.
....

You have told us nothing about what you did to supposedly get it working between response 3 and 5.
.....


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#11
February 17, 2012 at 21:33:04
If you want a PS that will support two 560Ti's in SLI then you will need something substantially better like this one:
http://www.newegg.com/Product/Produ...
But the price is of course higher.
The specs:
+3.3V@30A, +5V@30A, +12V@62A, -12V@0.8A, +5VSB@3.0A
Connectors:
1 x Main connector (20+4Pin)
1 x 4+4 Pin CPU
8 x Peripheral
8 x SATA
2 x Floppy
4 x PCI-E
Important:
A dedicated single +12V rail offers maximum compatibility with the latest components
80PLUS Bronze certified, delivering up to 85% energy efficiency at real world load conditions.
Active Power Factor Correction (PFC) with PF value of 0.99
More.

You have to be a little bit crazy to keep you from going insane.


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#12
February 17, 2012 at 21:37:32
the initial answer, the one one my computer shutting down after a few seconds is fixxed by putting my mobo out of the case. it is back in and still working. i have replaced the y wiring into my gpu with 2 groups of molex adapters. does that answer your questions

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#13
February 17, 2012 at 22:16:02
"the initial answer, the one one my computer shutting down after a few seconds is fixxed by putting my mobo out of the case. it is back in and still working."

That doesn't tell me much. Taking the mboard out of the case and connecting it and getting it running has many steps.

The fact that it is now NOT shutting down after a few seconds doesn't necessarily indicate the mboard is, and / or the components on it or the power supply are, working properly.

Once you have something connected so you can hear moard beeps, if nothing were wrong, you would hear a single short beep or sometimes two beeps a bit apart that indicate the POST completed sucessfully

If you don't hear that, but hear some oher beep pattern, there is one for a video problem.

If you don't have the cpu fan wiring connected to the cpu fan header, that alone can cause the mboard to shut off in a few seconds when no rpm is detected from that header by the bios - the bios often does that to prevent the CPU from being destroyed by overheating.

Make sure that there are NO metal post mboard mounts under the mboard where here are no screw holes in the mboard - if any are in the wrong place they can short circuits on the underside of the mboard, which ay be intermittent or constant, and may even damage the circuits, the mboard. .

" i have replaced the y wiring into my gpu with 2 groups of molex adapters."

You have already told us that previously, and that each one has two molex to one PCI-E 6 pin, unless you tried two other ones.

Your coolmax cti-700b has 2 PCI-E 6 pin connectors - the card should work fine with those. That PS has a 5 year warranty, which is good, but it sells for as little as $40, so as some one else has said, it probably IS a crappy PS.

I've been looking at prices for PSs for a friend the last few days, and in Canada a good quality 80 plus 800 or 850 watt one is rarely less than $125 for one that has a 5 year warranty and one +12v output section.

No further answers from me tonight.


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#14
February 18, 2012 at 07:42:27
It's very hard to tell whether the cpu has been installed properly when you install it when the mboard is installed in the case, since you can't see the socket sides properly, so at the very least you should install the cpu and heat sink when the mboard is not in the case, and examine the sides of the socket to make sure the cpu is all the way down.
.
Did you examine the cpu in the socket from the sides to make sure it's all the way down and flat on the socket when you took the mboard out of the case ?

Even if the cpu looks like it is flat on the socket, you could have tried removing the heat sink then moving the socket lever to loosen the cpu then pressing down on the cpu to make sure it's all the way down, then moving the lever to clamp the cpu in place - rarely, that's all that was wrong - an "iffy" connection of the cpu pins to the socket.

The purpose of the bench test is to make sure everything works before you install it in the case. If all you accomplished was you got it to start up without shutting off within a few seconds, that's not good enough


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