Sign in with
Sign up | Sign in
Your question
Solved

New PC wont turn on!??

Last response: in Systems
Share
December 27, 2011 4:36:45 PM

Alright so I finally got all the parts but the system wont turn on! I'm pretty sure everything is plugged in correctly but when I hit the power button on the top of the case, it wont start on!

I really need help!

If you need any info, please let me know so I can figure this out and get it fixed!

More about : wont turn

a c 78 B Homebuilt system
December 27, 2011 5:15:03 PM

I need lots of information.

Well, if you don't have anything plugged into the 4 or 8 pin white port near to the processor then plug something into it and try it. If it works, then I don't need any information.

If that isn't the problem or if that doesn't fix it, then tell me your whole system specs in addition to everything that happens when you start the computer.

Also, if you can take a picture of the inside of the case, feel free to do so and link them here.
m
0
l
December 27, 2011 5:22:19 PM

step 1. verify the system's power supply is plugged into the wall.
step 1.5. Verify the power switch on the PSU is switched on | not O (if applicable)
step 2. verify internal power connections of the 24/20 pin ATX plug and additional 4/8 pin aux power
step 3. verify the power button wires are connected to the header on the mobo
step 4. pics or it didn't happen (like raiddinn said)
m
0
l
Related resources
December 27, 2011 5:30:22 PM

4/8-pin motherboard header would be my guess - not plugged in or plugged in too loosely... same goes for 20/24-pin header.
m
0
l
December 27, 2011 5:31:55 PM

did you have standoffs when you put the motherboard in the case. This same thing happened to me because I didn't. I was grounding the motherboard to the case and nothing would happen. Took it out and placed the standoffs in between the case and board and my problem was solved.
m
0
l
December 27, 2011 5:36:07 PM

mindistortionz said:
did you have standoffs when you put the motherboard in the case. This same thing happened to me because I didn't. I was grounding the motherboard to the case and nothing would happen. Took it out and placed the standoffs in between the case and board and my problem was solved.


wha?? you screwed the mobo directly into the case? I'm trying to picture this
m
0
l
a c 78 B Homebuilt system
December 27, 2011 5:41:10 PM

I screwed a motherboard directly into a case in another life.

If you don't know any better (I used a generic PSU 700w that was probably 300w too in another life) it can happen.
m
0
l
December 27, 2011 5:54:46 PM

If by white port you mean the CPU Power and/or Fan then I'm fine.

System:
• Case: CoolerMaster 922 HAF

• Power Supply: Antec Earthwatts Green 650W Power Supply

• Operating System: Windows 7 Home Premium 64bit OEM

• Motherboard: MSI 760GM-E51

• CPU: AMD Phenom II x4 960t

• GPU: Radeon 6790 1GB

• RAM: Patriot G2 Series 4GB (2x2gb) 1333MHz

• HDD: Seagate 500GB

The Motherboard power is moster certainly in!

And the standoffs might be a problem. I'm not using the ones from the case. theyre big head case screws. (round) Yes, but I couldnt find the ones from the case till much later
m
0
l
December 27, 2011 5:57:10 PM

I've made my share of mistakes don't get me wrong... that's just a new one too me... Personally my mistakes usually relate to buying stuff without doing research then being disappointed later... ie. bought RV03... great case don't get me wrong, but water cooling options are limited on it... and I bought a 1gb 6950 (non reference design) so that presents issues for water cooling as well... I think... I have learned my lesson... but i doubt it ;) 
m
0
l
December 27, 2011 5:58:58 PM

Coputernewbie said:
If by white port you mean the CPU Power and/or Fan then I'm fine.

System:
• Case: CoolerMaster 922 HAF

• Power Supply: Antec Earthwatts Green 650W Power Supply

• Operating System: Windows 7 Home Premium 64bit OEM

• Motherboard: MSI 760GM-E51

• CPU: AMD Phenom II x4 960t

• GPU: Radeon 6790 1GB

• RAM: Patriot G2 Series 4GB (2x2gb) 1333MHz

• HDD: Seagate 500GB

The Motherboard power is moster certainly in!

And the standoffs might be a problem. I'm not using the ones from the case. theyre big head case screws. (round) Yes, but I couldnt find the ones from the case till much later


The stand offs serve the purpose of lifting the back of the mobo off the case... as long as the screws aren't hitting any contacts it should be fine... I've used case screws on the mobo standoffs before with no issue
m
0
l
a c 78 B Homebuilt system
December 27, 2011 6:18:00 PM

If you are using screws intended for the case to hold the motherboard on the standoffs then maybe you should try using the ones built for that if you did find them.

It isn't the worst thing in the world to try.
m
0
l
December 27, 2011 6:22:22 PM

Connectors?

Okay the standoff holes (circular) are surrounded by bronze "dots".

Think of it like a donut. The hole in the center being where the standoff fits and where the toppings of the donut would be where the bronze "dots" would be. are those connectors?
m
0
l
December 27, 2011 6:37:25 PM

I have paper washers that went on the screw before screwing the mobo down to the stand offs, without them I had problems.

And yeah I actually did screw my mobo directly into my case once. I saw the extra bag of stand offs and didn't know what the heck they were.Ha..
m
0
l
December 27, 2011 6:38:33 PM

they are not... they are their on every mobo the screws being on those should not cause an issue
m
0
l
December 27, 2011 7:51:36 PM

Should i just start over again then? I dont see what the problem is.
m
0
l
a c 78 B Homebuilt system
December 27, 2011 7:56:23 PM

Yes, just start over.

Take everything out of the case and put it all on a wooden table. You can leave the CPU and 1 RAM stick in the motherboard, but all the rest goes.

Then plug the PSU twice into the motherboard and put a small metal object on the two pins labeled PWR_BTN in the motherboard manual. This should turn it on.

Tell me how it responds.
m
0
l
December 28, 2011 2:49:56 PM

Okay. So I'm starting my build again and just to be sure I need to ask,

When plugging in the fans, I have one strip for that with three connectors on it. (non-modular PSU) I plugg the white connector from the fans into each black connector of the PSU meant for the fans. But there are still three white connectors (that can have something plugged INTO them) left over.

Can those stay unplugged?

The only things I have left over are the data cables for the HDD and DVDD, and another PCI cable.
m
0
l
December 28, 2011 2:52:55 PM

And another question.

Are the white connectors jumpers?

Would I take one of the three leftover white connectors and plug it into the DVDD?

Like I said i only have the data cables, PCI cable and three leftover white connectors.
m
0
l
December 28, 2011 3:01:05 PM

you should have fan headers on your motherboard as well as on the psu... the fan on your CPU should be plugged into the CPU_FAN header on the mobo not the PSU otherwise it will give you errors saying the cpu fan is missing or speed is low on boot
m
0
l
a c 78 B Homebuilt system
December 28, 2011 3:03:56 PM

Jumpers are something else entirely.

Jumpers are something that electricity must pass through in order for certain things to happen.

In the back of an old hard drive there was a place for a little white thing to go in. If you set it the way the picture showed for "Master" then the computer would try to boot from that drive. If you set it the way the picture showed for "Slave" then the computer wouldn't try to boot from it.

The computer's power button acts as a jumper. There are two pins on the motherboard listed in the manual as PWR_BTN. The computer cannot turn on unless power flows from one to the other. If nothing is plugged in then the computer cannot start.

You can put a screw driver across these two things if the power button on the case isn't plugged into these buttons and the computer will turn on.

If you do plug in the power button from the case, what happens is when you push the power button then power will flow up the cable to the power button, threw a piece of metal touching the other wire, back down the other wire, and thus the two pins are completely linked and the computer will turn on.

What you mean is:

Are they splitters? Can they take one source of power and turn it into two?

They can do so.

Many devices that are connected to power cords don't use all the power available. Thus you can split the line between two devices and both will use their amounts and it will still work.

You should be able to do that with those cables you have.

You should be able to plug anything into any port that it is designed for and it should work. If it looks like they go together, they probably do.
m
0
l
December 28, 2011 3:12:04 PM

I think you're getting your nomenclature for your cables mixed up too...
molex (female) http://upload.wikimedia.org/wikipedia/commons/thumb/3/3...
molex (male) http://upload.wikimedia.org/wikipedia/commons/thumb/1/1...
PCI-e connector (can be 6 or 8 or 6+2) http://techreport.com/r.x/psus-0907/pcie-connectors.jpg
SATA power http://upload.wikimedia.org/wikipedia/commons/thumb/6/6...
Fan Connector (comes in 3 or 4 but will plug into either) http://www.virtualinformation.com/ebay_images/3pinYcabl...
Auxillary Power (4 Pin or 8 Pin or 4+4) I can't find a picture, but it looks like the PCI-e connector, but won't say PCI-e on it... your mobo has a 4 pin plug as it is an AMD and intel uses an 8 pin plug now
m
0
l
December 28, 2011 3:55:03 PM

All three fans of the case are plugged in to the PSU.

The CPU Fan is not plugged into the PSU. Never as been.

Okay, so lets see if I have this right.

The MOBO power is definitely plugged in.

If I'm not mistaken, the Power switch, Reset switch and LEDs are plugged in.
I went to the manual and found the pins I believe you are talking about, at the bottom right hand of the Motherboard (motherboard is in the case correctly) several days ago and plugged in the switches like I said

Power button aside, lets see if I have thjis part correct as well;

To clarify, from the can there are two connectors, one where you can plug it into something, (eg. pins are pocking outward) and one where it can have something plugged INTO it (eg. pins are relatively "holo")

The thing I dont understand is, the leftovers are CONNECTED TO THE FANS!

Could I still take a left over white connector and use it for the DVDD? Wouldn't it split the power so both work?
(a black connector from the PSU wont reach the DVDD)

All three fans of the case are plugged in to the PSU.

Sorry if I'm going in circles, but without a doubt I understand what both are you are sating and where youre coming from
m
0
l
December 28, 2011 4:24:24 PM

Okay thank you slhpss. Lets rephrase shall we?

There is a molex male and female to each fan. All the male molex are plugged into the female molex of the PSU. but I have one leftover female molex for each fan.

I am now trying to set up the HDD and DVDD. But the Female Molex of the PSU wont reach the Male Molex of the DVDD. Could I take a Female Molex leftover from the fans and plug it into the DVDD and have it slit the power so both work?

Like I said sorry if I'm running in circles.
m
0
l
a c 78 B Homebuilt system
December 28, 2011 4:34:48 PM

Generally, the connectors are called either the male end or the female end. For the purposes of this, you ignore the protective housing on the outside of a connector, it only matters what the internal design is like.

The ports on the wall for a regular electrical outlet are female end. The power cords you plug into them are male end.

In the back of your average hard drive is a male end connector. Coming out of the PSU is the female end connector that plugs into it.

Anyway, if you use these things when you are describing things, then people understand it better.

Anyway, it sounds like you mean that your fan cables have extra female end cables attached to them that you can plug into, say, a hard drive or CD drive. If so, then yes it should work without problems.

The total number of amps on the wire is the thing of primary importance.

Imagine if you daisy chained like 50 surge protectors one after another. If you plug something into the last one, it should still operate. It isn't advised to daisy chain like this, but it should technically work.

This is the same sort of effect.

If I understand your fans, they allow this sort of daisy chaining to take place. Ideally you will want to use it only as much as you must, preferring to plug things into the PSU cords directly, but if you run out of direct PSU cords then they still do the same thing in a slightly worse way.

- Edit -

If you look in the pictures for this 120 mm Xigmatek fan, it has an accessory with it that I think is what the OP is describing.

http://www.newegg.com/Product/Product.aspx?Item=N82E168...
m
0
l
December 28, 2011 4:37:32 PM

ok.... reread that and I'm thinking the fans are setup as Y adapters... sort of... see raiddinn's post... just don't overload either rail on your PSU... sadly I have the same PSU and I don't even know how the power is distributed between the rails :( 


actually... do you have the earthwatts 650 or the earthwatts 650 green (easy way to tell is if the actual power supply is green)
m
0
l
a c 78 B Homebuilt system
December 28, 2011 4:42:18 PM

Usually the CPU is on one rail and all the PCIE stuff is on the other one.
m
0
l
December 28, 2011 4:46:16 PM

Yes Green. But how do I tell if I'm putting too many things on one rail?
Couyld that be why it isnt turning on?
m
0
l
December 28, 2011 4:58:28 PM

ok... so you have 2x 38 amp rails
with everything on rail 1 except 1 of your two PCIe connectors and your 4+4 atx12v (aux) plug...

you should calculate the wattage for everything else and make sure it's below 456 amps

I would say try unplugging everything except what's necessary.. ie. 1 hdd, mobo, vid card, and cpu fan then try starting it... if it starts up fine shut it down and add more stuff... with my 650 ea (no green) I have an amd 940be, 2 sticks ddr2, hd 6950, 9 fans, and 3 hdds and it's kicking out good... so no reason you shouldn't be able to power everything you have unless you have more than that...
m
0
l
December 28, 2011 4:58:47 PM

Lol okay we posted slightly off pace.
As I said I have one strand too plug the fans into and two for sever rives. DDVDD or HDD otherwise.
......................................
Well I just tried to rearrange the cords so I could plug in the DVDD and HDD but it wont happen.

The only thing I can do is Move the DVDD down a lil and then plug it in if I want a direct connection.

What "performance" differences might I see if it is an in-derect connection?

Would you recommend moving the DVDD down a few slots or leave it as an in-derect connection?
m
0
l
December 28, 2011 5:00:51 PM

I shouldnt. But I can look at my build you quoted.
m
0
l
a c 78 B Homebuilt system
December 28, 2011 5:05:25 PM

It is best to have the CD/DVD drive in the closest slot to the bottom that it can go in for a bottom mount PSU. That allows for the best cable management anyway.
m
0
l
December 28, 2011 5:12:40 PM

Alright. Thanks. But I do have another question. For the motherboard power, there are four pins on the same strand, but they are separate. Do I need them plugged in or not?
m
0
l
December 28, 2011 5:15:59 PM

you mean the 20+4? if the motherboard has room for 24 plug them both in if not leave the 4 hanging... that's the ATX power connector.
m
0
l
a c 78 B Homebuilt system
December 28, 2011 5:18:06 PM

It is 99% likely you will have a 24 pin motherboard connector and likely you will have a 20+4 coming out of the PSU. You will need to combine the two and use both, yes.

The rule of thumb is generally if you can use it you should.
m
0
l
December 28, 2011 5:25:28 PM

Huuu.....

Well it doesnt matter cuz i tried it again and it didnt turn on with or without the
+4 pins

.....
m
0
l
December 28, 2011 5:28:02 PM

at this point, ill follow along.

The PSU? No, Surge Protector.
m
0
l
December 28, 2011 5:29:02 PM

And yes, the power button is in the mobo
m
0
l
a c 78 B Homebuilt system
December 28, 2011 5:30:36 PM

The PSU needs to be plugged into the motherboard with 2 separate cables. One is a 4 pin port near the processor and another is a 24 pin port near the edge of the motherboard. Those both have to be in for it to work.

If you don't have the standoffs in between the case and the motherboard, you also need that in order for it to work.
m
0
l
a c 78 B Homebuilt system
December 28, 2011 5:31:25 PM

Take the power button out and try to start it by putting a flat screwdriver across the two pins in the motherboard book labeled PWR_BTN
m
0
l
December 28, 2011 5:35:13 PM

remove the power button plug... the header for the power button has 9 connectors setup as follows

****
*****

the 3rd and 4th pin on the row with only 4 pins is the power button... unplug that from the power button on your case... and use a small screwdriver to connect those two pins... this should cause the system to come on..

the set of headers is labeled jfp1
m
0
l
December 28, 2011 5:35:31 PM

lol stop typing faster than me raiddinn!!!!
m
0
l
a c 78 B Homebuilt system
December 28, 2011 5:42:50 PM

I do that. I already responded to like 2 other threads now too.

I think like 13 years ago I was typing at 90+ wpm. Since then I don't think I got worse. All I really know how to do these days is type.
m
0
l
December 28, 2011 5:45:29 PM

Okay if I need too, Ill mess with the screws.

But if the Mobo is touching the case it wont work?

I knew there where two places where it plugged into.

But heres one of the problems. The four pin, I can swear is the CPU power (left of the CPU) and I'm not sure anymore what the separate mobo power cable looks like.
m
0
l
a c 78 B Homebuilt system
December 28, 2011 5:49:58 PM

The little square white port near the CPU is the processor power. The big fat square white one is the motherboard power. It is the biggest fattest thing connected to the PSU.


Yes, if the motherboard is touching the case then it wont work. There are these things called standoffs that must be screwed into the case. The motherboard must be screwed into those rather than the case directly.

If the motherboard is screwed directly into the case, the computer will never start.
m
0
l
December 28, 2011 5:53:14 PM

Raiddinn said:
I do that. I already responded to like 2 other threads now too.

I think like 13 years ago I was typing at 90+ wpm. Since then I don't think I got worse. All I really know how to do these days is type.


you're only beating me cause I'm on my crappy work computer and crappy work internet so looking up manuals and pin outs for the specific mother board takes me longer :(  but anyways i think I will let you have this one... if the motherboard is screwed directly to the case I will weep for you...
m
0
l
a c 78 B Homebuilt system
December 28, 2011 5:59:34 PM

Well, I am on a fairly weak laptop and the wireless network I am on and the satellite connection to the internet it uses isn't anything like my real setup at home. I have FIOS and the computer in my signature back at home, I can be a lot more productive in that situation too.

But yeah, I feel you on that.

As for the motherboard being screwed into the case, it probably happens more often than you think from those people that just dive right in without reading manuals and things.
m
0
l
December 28, 2011 6:00:34 PM

lol i was about to do that slhpss.

Okay slhppss, lets please get this figured out
file:///C:/Users/Public/Pictures/Sample%20Pictures/msi_760gm_e51.jpg

look at this if you can raiddinn

Yes the ones you marked down at the bottom left of the board? Power switches right? I have that right.

Now the 4pin above and too the right of the CPU is what? Cant reed it. Isnt that the CPU power?

And yes I know for a 100% fact which one is the mobo power (24pin)
m
0
l
!