PC immediately loses power.

[Mattigins]

So i have this computer that i decided to put an SSD into.. (fully working system)

I opened the computer and it was full of dust so i decided to take everything out and clean it all and then put it back in with the SSD.

Upon putting everything back together i turned it on and the CPU fan and case fans spun for maybe 1 revolution and then everything lost power..

No matter what i try i can't seem to get it to keep power.

Here is what I've tried:
*Replaced PSU with brand new PSU (higher wattage).
*Unplugged everything except psu, mobo and ram.
*Tried each stick of ram individually.
*Re-sat all ram and CPU+heatsink+re-pasted.
*Added an internal speaker for beep codes (it beeps but doesn't stay on long enough to be sure that it has gotten through all the beeps).
*Tried different power board, cord and wall socket (worth a try).
*Bread boarded the system to eliminate a possible short.

Whilst trying all of this at one point i forgot to plug in the ATX 12v 8-pin cable near the CPU, and the system didn't lose power.. but obviously without a CPU that is useless..

Specs:
*i7 CPU
*Gigabyte GA-EX58 UD3R rev 1.6 Motherboard

System worked fine before i cleaned it.

Any advice or tips on what i could try would be appreciated.. I do not have another i7 to test in the motherboard unfortunately.

 

[Mattigins]

I have re-seated the CPU again and i had a look for bent pins.. i couldn't find any, but i took a picture just in case you guys can see something that i can't..

http://www.pardio.net/cpu-i7.JPG

I also recorded a short video of the problem, and beep codes..
http://www.youtube.com/watch?v=Q0xklKEQKMk

 

[raubon]

Edit: I overlooked that you tried this, at least the outlet part.
Good luck with this.

Did you try a different outlet? See #5 for a lamp test.
http://pcsupport.about.com/od/findbysymptom/ht/nopowertopc.htm

It's likely something else, given your description, but I've had power issues as well with dusty PCs. At least this would be easy to eliminate as a potential cause.

 

[Mattigins]

Like i said in the initial post
"*Tried different power board, cord and wall socket (worth a try)."

I even tried a known good computer in the same socket, that worked so that's definitely not the problem.

 

[chaotixblade]

Hey, I will start looking into it man 😀 Give me a little bit o time and I will return.

 

[chaotixblade]

This may sound rather stupid. But it may offer a fix, as it did with my third build.


You should check your 24 pin connector on your mainboard. Often times with newbuilds, people don't realize that there is a clip beneath the 4 pin addon. (The 20+ pin, and the 4+ pin) It makes the 4 pin stay down. Often (depending on the PSU) people will put the 20+ pin in first. Try reseating your 24 pin connector again. (You may have already done this, but I am still looking for other solutions)

Uber respect,

Chaotixblade (Doggg)

Could you please tell me the name of your MOBO. Your beeps are rather... useless without the brand 😀DDD

 

[Mattigins]

There's a clip? i will have to check that out..

 

[Mattigins]

*Gigabyte GA-EX58 UD3R rev 1.6 Motherboard

As stated in the initial post 😛

 

[chaotixblade]

In some PSU's there is a clip. It seems the power draw cuts off too quickly to accurately determine the POST code. I would conclude it has to be a psu issue. IF YOU POSSIBLY COULD. Remove any power demanding parts from the system, to insure non electrical over charge. (If the psu is cheap, or under wattage) Grab a psu, from ANY old computer, and just plug up the mobo, and see if you can get it to POST. if you can, that will greatly increase my percentage of being able to help you.

Uber Respect,

Matt/Chaotixblade

 

[chaotixblade]

Oh, and if that doesnt fix it, there is a prob with your mainboard.

 

[Mattigins]

The PSU is definately not cheap.. its a 725 Watt and the system ran fine with its 650 Watt before i cleaned it.

Anyway, i have unplugged everything except the Mobo, PSU, RAM (1 stick) and CPU

 

[chaotixblade]

Noooooooo, I mean the one you will test out. (Get another psu)

 

[chaotixblade]

I meant no disrespect sir.

I meant that if you find another psu laying around. Like one from a previous build, just incase THAT ONE isn't the best of quality, you dont risk a. Frying it, or b. frying anything else in your system.

 

[Mattigins]

The only other PSU's i have only have 4 pin connectors for the CPU, is that ok? the mobo is an 8 pin one

 

[chaotixblade]

Well, I will do a quick google search. This is outside of my knowledge, this may risk Wattage issues. (Frying something else...)

[Edit] I cannot really guarantee stability. I would not try it....

 

[Mattigins]

I did think about trying a different PSU but i didn't want to risk it either.

 

[chaotixblade]

I would say yes, then i realized im using a stripped down I3, your using an I7. Doing that is essentially underclocking your i7, like a ancient piece of hardware. (Back in the old days)

I can't imagine the outcome being anything but less than pleasant...

 

[chaotixblade]

note did you get my message?