Help! PC not turning on!

[morpheus1870]

So I've only had my pc a short time having lovely put it together with lots of nice parts

Asus x99
I7 6800
64gb ddr4
Gtx1080
Corsair hydro and corsair 1000x psu.

Today I went to attach my externally powered drobo drive unit to the front usb 2 port and there was pop and i had short circuit in the entire room. I later realised the external 4 bay drive was connected to mains and turned on, is this why it happend? Should I have connected it first before turning the power on the externall drives?

I flipped the trip switch in the hall way and everything came back on (tv, mac, lights etc) other than the PC. It won't power on at all.

Could this be just the psu or most likely everything else gone too? I've spent upwards of $3500 on this machine and it's my commercial workstation for my photography and film work (everything was backed up no data loss). And I'm shitting bricks thinking my motherboard cpu graphics card have all fried.

Where do I start? Should I just try a new PCU first, and if that doesn't do anything what do I do next?

Please help, I'm gutted right now.

 

[mcconkeymike]

First thing I would try is to replace the power supply with a known good unit. That is your most likely problem. If the PC doesn't power on with a known good PSU, then you've got your work cut out for you with swapping RAM, GPU, everything that you can until you either run out of parts to swap or you get it to power on. Good luck.

 

[mcnumpty23]

can do a basic test of the psu by jump starting it with a paper clip or similar

if that shows the psu is working

try taking out the 24 pin and 8 pin connectors turn psu/pc off at the wall then push on/off button a few times

then reconnect 24 pin and 8 pin and try to turn on pc

used to have an asus board if the rcd tripped i had to do that before it would start for some unknown reason

and if in a country like the uk where plugs have fuses in them check the fuse in the plug

 

[morpheus1870]

So i just went back and put the power cord into the pcu and turned on from the mains, the little power and reset switch on the mother board is on however it still won't power on from the tower. Is this a good sign?

 

[morpheus1870]

I tried disconnecting power and turning on and off from the mains and back of the machine whilst the 24 and 8 pin were disconnected. Connected all up again but just as before only the little freen reset light and red power light on the asus board are on. Nothing else turns on.

 

[mcnumpty23]

you mean the board has switches/buttons that light up? and they are lit?

if so its a start at least from nothing at all happening

 

[morpheus1870]

you mean the board has switches/buttons that light up? and they are lit?

if so its a start at least from nothing at all happening

At the bottom of the asus board there are two small switches a power switch and a reset switch. They come on as soon as I plug the power cable into the mains even with the main switch on the back of the tower turned to the off position. As though it's still drawing some kind of residual power even with the main switch off. It's always done this. However nothing powers on still.

 

[mcnumpty23]

tried turning it on with both the case on/off button and the on/off on the motherboard?

 

[Slumy__57]

This is a total shot in the dark here, but I have an Asus board that requires special treatment every time it loses power. If it gets unplugged, experiences a power surge/outage, or if I turn the PSU switch off and on, I have to take a few weird steps to get the PC itself to power up initially. Same deal as you, several lights will come on on the motherboard, but no response from the front switch.

Not saying it will definitely work in your case, but worth a shot. Try turning off the PSU switch, hold the power button on your pc down until the lights on your mobo turn off. After these lights are off, hold down the front power switch on your case, and flick the PSU switch back into the on position while holding the front power switch. Keep holding the front switch for a few seconds after you flip the PSU switch, and if it's anything like my pc, it'll turn on after a few seconds of holding the front power switch.

 

[morpheus1870]

This is a total shot in the dark here, but I have an Asus board that requires special treatment every time it loses power. If it gets unplugged, experiences a power surge/outage, or if I turn the PSU switch off and on, I have to take a few weird steps to get the PC itself to power up initially. Same deal as you, several lights will come on on the motherboard, but no response from the front switch.

Not saying it will definitely work in your case, but worth a shot. Try turning off the PSU switch, hold the power button on your pc down until the lights on your mobo turn off. After these lights are off, hold down the front power switch on your case, and flick the PSU switch back into the on position while holding the front power switch. Keep holding the front switch for a few seconds after you flip the PSU switch, and if it's anything like my pc, it'll turn on after a few seconds of holding the front power switch.

Trying this but it's not happening, i really wish it would just wake up!

This is all i can see on:

http://fkphotography.zenfolio.com//img/s5/v116/p2207402862-3.jpg?sn=6VH&tk=Ru_B_M-v7root0uEd9_cNXJxdUiVDud7gX7U81WSsms=

 

[mcnumpty23]

was it a front usb port you plugged into?

if so remove the front usb headers from the motherboard

 

[morpheus1870]

Tried removing the front usb port but no joy unfortuantely. I'm taking it to a pc repair company in the morning and have them check the psu and see what happens. I'm praying it's just a simple swap out of the psu, but if it is friend whats the chances other components have also had it?

This incident is leading me to believe I've screwed up on the grounding part as i don't get why it shorted out like this when plugging in the external raid unit.

 

[morpheus1870]

Could the original spark/short happened because of the actual mains plug? The PC mains plug is a two pin type 16amps 250V however the extension adaptor to allow me to add it to a 3 pin input is 13amps 250v. Is this possibly where the issue has occured originally?

 

[mcnumpty23]

Tried removing the front usb port but no joy unfortuantely. I'm taking it to a pc repair company in the morning and have them check the psu and see what happens. I'm praying it's just a simple swap out of the psu, but if it is friend whats the chances other components have also had it?

This incident is leading me to believe I've screwed up on the grounding part as i don't get why it shorted out like this when plugging in the external raid unit.

hope its not too serious but because it looks like plugging in the usb did it quite possible the motherboard took the hit and not the psu

 

[morpheus1870]

Well took it to the pc repair guy and the psu is definitely shot, he's going to take a look at it and see if he can get it up and running. If it is the mother board what's the chances everything connected to it including the cpu, gpu etc are also screwed?

If it is the mother board will I be able to simply replace with the same model, plug in all my parts and boot it as normal? Would the operating system on the ssd just kick in as normal and everything just boot as normal?

Never had this happen before so I'm a little ignorant about it all. Thanks for all your help people.

 

[mcnumpty23]

fingers crossed for you its only the psu

yes if you replaced with same motherboard model it should just boot up like normal

even a different motherboard would have a reasonable chance of booting up

 

[morpheus1870]

It's the Mother Board. Just got the pc back from the repair place and they've said the power unit is ok as it basically locked up however the mother board is unresponsive.

I've just ordered a replacement X99 however I would like to ask the following

A) what's the chances the cpu/gpu etc are also damaged

B) what can i do to ensure this kind of thing doesn't happen again? Is there something I add to prevent power surge through the USB port? Maybe some intermediary device that would trip first before it reached the mobo?

I can't afford this to happen again!

 

[mcnumpty23]

kind of what i thought because it was the usb port that the motherboard would take the hit

a--yes anything that was plugged in the motherboard may also be kaput

b--nothing i know of really--its a known problem that a power surge through the usb ports can be deadly--hence the sale of those usb killer devices