PC Suddenly Won’t Boot Up

Mar 26, 2020 12:52PM PDT

PC Suddenly Won’t Boot

I recently built my first pc around 2 days ago and everything has been working fine. So today I decided I want to route the HD audio cord through a different cut out so I shut down the pc, flipped the psu switch off, and went on disconnecting then reconnecting the audio cord. So I went to flip the psu switch back on and when I did a light on the mobo flashed and now my pc won’t boot. I know it has power cause my keyboard lights up, but when I hit the power switch on the front nothing happens. No fans or anything. I’ve reseated the front panel connectors and still nothing. Any help is appreciated as I am still a beginner and worried I may have broken something.


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Sorry but no.
Mar 26, 2020 1:26PM PDT

The keyboard light only tells you that one of the PSU rails came on. It tells you little to nothing.

For THE DEAD PC the process is the same. You make the PC as small as possible then make it smaller till you find it or you are left with as few parts that don't power up.

For example I can put the motherboard and nothing else in the old motherboard shipping box, connect the PSU and try a power up test. This varies with motherboards but works 99% of the time as I rarely see a power up issue with just two items. Also no to "Don't you know what it is on my PC?"

Again, you make it smaller. That said it sounds like the old issue of too many motherboard standoffs where it finally scrapes through the motherboard paint and shorts out. I'd start as small as possible and build up testing as you go.

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Still not powering on...
Mar 26, 2020 2:58PM PDT

So I tried what you said and I now am only with a cpu, cooler, and ram installed and still no boot. The green light on my mobo still flashes once no matter what whenever I flip the on switch on the psu. Could it be a faulty front panel connector from the case?

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RAM is not required for power up.
Mar 26, 2020 3:12PM PDT

And again, NO case either. Your note about the front panel connector makes me think you have more parts to eject.

Again, we have to at times get down to just two parts and then we know it's one of those.

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How would you power up?
Mar 26, 2020 3:20PM PDT

If you didn’t connect the front panel, how would you power up? Sorry if the questions are repetitive, I’m a beginner.

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Mar 26, 2020 3:30PM PDT

We don't want the case yet since so many new builders short out the motherboard with some extra mounting post. If we are lucky the motherboard survives.

And yes, some new builders will ask why it shorted out later.

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No boot sadly...
Mar 26, 2020 8:37PM PDT

So I am left with just the cpu and psu plugged into the mobo and when I jump the two power switch pins together nothing happens.
Does this mean I somehow fried the motherboard? I got a warranty on it if that’s the case.

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Mar 26, 2020 8:48PM PDT

The light on the motherboard still flashes green when I turn on the psu, so could it just be the pins or something causing not to boot but some parts of it still work?

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If you can't power up (we are not talking boot.)
Mar 27, 2020 8:50AM PDT

When you reduce the parts to the bare minimum then the bad or misconfigured items are what's left. It may be one or all but at 2 days old you have a warranty so RMA the motherboard for another now.

As to the parts of a motherboard that work (the part that flashed green) it does no good to get into that since the motherboard is not repairable except at the maker's repair sites. This may upset some that I don't hold classes on electronics but that's a multi-year study that I can't condense here.

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Would I need to do anything else?
Mar 27, 2020 12:26PM PDT

Am I able to just unplug everything and get a new one with no problems? Cause I already installed windows and updated all the chipset drivers on an ssd so I can just plug everything back in and just update again right? Thanks for all the help by the way!

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Mar 27, 2020 12:43PM PDT

If you've replaced the bad parts, that is what usually happens. BUT I've seen new builders leave in the mounting stud that shorted out the board and they can burn through boards until they are denied RMA due to them burning up boards.

You wrote you are new to this so how can I know what you know?

Also, Windows does NOT like motherboard changes. If it's the same make and model it may still balk if you activated your copy. That won't stop you from using it but involved a call to Microsoft to tell them what happened and get a new key.

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A decent amount
Mar 27, 2020 4:12PM PDT

I know a little bit just from watching building videos the last couple of months, but I’m not sure what you mean by mounting stud?

Also, I haven’t put in a key yet so I’m running on inactivated windows right now. So would the best thing to do be wipe the drives and do a clean install? I only have a few games installed before the shortage happened.

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Mar 27, 2020 4:14PM PDT

I don’t think I could cause wouldn’t it detect I already have a copy of windows installed so what would I do?

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Mounting stud. Also known as
Mar 27, 2020 4:30PM PDT

Motherboard standoff or mount.

As to the wipe since it's not activated and it's the same motherboard make and model it's up to you. For me I would since I don't like any ambiguity or chance it can cause issues later.

As to your Actually post, I can't decode your question. What are you asking?

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Plan of action
Mar 27, 2020 5:02PM PDT

So would I just exchanged the motherboard and do the exact steps I did last time to assemble it, just being more careful to not static shock it which is what I assume I did?
It should just boot straight to windows again right? And if I don’t do the wipe of the drives, will it automatically update the drivers like last time or will it keep the ones I already have installed?

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Just for clarification
Mar 27, 2020 5:03PM PDT

By leaving in the mounting stud, do you mean like screwing it in too hard? Cause the motherboard didn’t have one installed when it was in the box.

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Again no.
Mar 27, 2020 5:13PM PDT

The motherboard does NOT have mounting studs installed. These are installed to the case and the motherboard rests on them and we then install some mounting screws.

Again, new builders often have too many mounting posts and that creates a problem either right away or later.

It's not funny as the new builder asks "Why did it work for weeks, days, or years?" It was incorrectly built. That's the end of this.

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Sorry NO!
Mar 27, 2020 5:10PM PDT

If you did the same steps and left an extra mounting post the problem would repeat. This is a very common assemble mistake by new builders.

As to the boot to Windows you are asking me to predict the future which I can not do. It should be fine but hey, Windows. As to the drivers, Microsoft is not known to leave drivers untouched unless you change a setting which we only do in very special situations which this is not one.

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Thank you!
Mar 27, 2020 5:42PM PDT

Welp I think that solves everything! Thank you for all your help on this, I think I’ll just wipe both the drives when I install the windows!
Again, thanks a lot!

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