PC will just not boot up at all

[Layback Bear]

I believe that connector Barman is talking about should be in the upper left close to the I/O panel. Mine is two 2 pin connectors.

 

[dannyk90]

I believe that connector Barman is talking about should be in the upper left close to the I/O panel. Mine is two 2 pin connectors.

yeah thats one of the cables i checked, mines a 8 pin

 

[dannyk90]

You think the pc case is shorting the motherboard ?

 

[Layback Bear]

There/their is no way for us to know. You are the one that has to decide that. You can put your system together outside of the case and find out. I have seen and heard of improper installation of motherboard causing this problem. Not using stand offs correctly or a case not made correctly. There/their is little room for error.

 

[dannyk90]

There/their is no way for us to know. You are the one that has to decide that. You can put your system together outside of the case and find out. I have seen and heard of improper installation of motherboard causing this problem. Not using stand offs correctly or a case not made correctly. There/their is little room for error.

how do i set it up outside; what about the power+reset+ide thingy pins ?
All my standoffs are fine.
Ill try taking standoffs out and lifting it up abit from the case when i get home.

 

[Barman58]

best way to check the case shorting the motherboard is using a multimeter to check the resistance between the positive connection from the PSU, (You check the socket on the board with the PSU plugs disconnected), and the case at various points if you get a zero or extremely low resistance reading you have a short as the resistance should be near or at infinite.

setting up the system outside the case is a major undertaking and will require an insulated pad to place the motherboard and the components on, then you just connect everything as if it was inside the case.

Of course you should only proceed with any of these advanced test procedures if you are fully comfortable with the methods involved

 

[dannyk90]

SWEET JESUS I DID IT!!!

i put my pc on its side, placed a fan underneath my motherboard so its is resting ontop... away i went ))

If i take the fan back out and rest the mb on the mb screws (not screwed in) then the problem comes back, so what does this mean? I cant screw my mb in or my pc wont work lol how do i fix that?

 

[comptech805]

My pc was working fine for a few months then one day it just wouldnt boot up. Inside the case i saw the CPU Led was on red. It has power; fans spinning and hardware running. Just not posting

I reseated everything and still same problem.

Did the Cmos battery, Jumpers, MemOk thing whilst changing and reseating each hardware. Didnt solve it.

So i bought a new peice of hardware and replaced each thing one by one, so Ive tried replacing the: motherboard, power supply, graphics card, processer and ram.

I have 2 disc drives which ive unplugged till I get this problem solved.

I have 3 SSD's ive tried only one plugged each time.

Nothing smells burnt.

Motherboards screws are all in and tight.

All cables in correct places and secure.

Its cool inside the case. No overheating problems whilst it was working.

I am really stuck now
If you have any tips what you think I have not tried then please share

Just leave it like that /...

 

[dannyk90]

i need to stand it up though lol and i think things will move about if i do that

and the things at the back dont match up

 

[Barman58]

Sounds like it may well be an earthing/grounding problem, it would appear that the MB is shorting out to the case.

One suggestion is to obtain some insulated, (Fibre, Plastic, or rubber), Grommets, (Washers). Fit these between the motherboard and the mounting pillars, (fit on both sides so that the pillars and the mounting screws are isolated from touching the motherboard). Reassemble and see if this solves the issue.

It could also be a dry joint somewhere in the motherboard circuitry but this is a very difficult to actually locate, which is making a connection when the board is in one position but not in the "normal" one

Long term I would suggest you RTM the board to the supplier as this new board is certainly suspect

 

[dannyk90]

Oh wow, someone really does not want me to get my pc going -_- we have a new problem now, looks worse...
I was just putting it on my desk after i had solved the cpu light problem (was working on it on the floor) Press On and theres a milisecond of power then goes off :'(
Changed psu's and same thing ugh

 

[dannyk90]

got the motherboards plastic bag beneath it to stop it from shorting (to fix the original problem)

tried only basics in mb, swapping mb's, swapping psu's.

I am so stumped, so was the technician i showed it to today D:

ima give up on computers soon lol this is mental.

 

[Layback Bear]

Because it has happened with two motherboard you have installed along with all the other parts you have swapped I'm thinking it is the methods you use to install them. A misalignment of stand offs, guide pin or in out panel can cause damage to a motherboard. I have known of one case where/wheir the motherboard tray was made wrong and caused the motherboard not to install correctly. (Not align properly)

 

[techno di]

listen , i don't know the exact cause for your PC .. my laptop had the same problem and today the repairer told that the problem was that one ram is dead and the other is not functioning probably ....

 

[dannyk90]

Got it. Breadborded my motherboard, the brand new Corsair Ax850 is ****ed.

My old one powers my motherboard fine. (im sure i already tested the psu's but i confirmed it just now, so back to my first problem

 

[dannyk90]

okay putting the peices back in, it shuts off instantly with my gtx590's power plugs in, but with it still in and no power plugs then it boots up, so my graphics card is also dead ?

 

[dannyk90]

okay, breadboarding with just the 2 motherboard power plugs in gets the red cpu led now :/ doing the same with my other motherboard dosnt start at all.

Life can not just be easy lol.

 

[dannyk90]

Getting a replaced power supply and motherboard, the only things bought within a year lol