Question PC won’t power on at all

Jan 16, 2024
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I have a gaming PC I built myself that he had for 2.5 years. Recently I bought a new SSD, a Samsung 990 pro, I went to I stall it but didn’t have the right mounts so I put it back together and the PC worked fine. once I got the mounts I installed the SSD. Plugged everything in and now my PC won’t turn on. The Ethernet port still has a light when I plug a chord in, but there are no lights no sounds no nothing when I press the power button. When I plug the PSU into everything except the COU the hardware fault light comes on so it looks like the MB is getting some power. I’ve tested it by taking all parts out except the CPU, PSU and one stick of Ram and still nothing. I tested my power supply with a multimeter and everything was working correctly, I then replaced the power supply completely and still nothing. I have tried jumping the power pins on the MB and that also did not work.
I’m at a loss, I didn’t remove my CPU so that shouldn’t be damaged and no other component had any issues when uninstalling, except the GPU took some force to get out since the clip was stuck.
So I have ruled out the PSU and the board won’t turn on at all, no fans no light no beeps no nothing, my outlet is fine, I have tried multiple and the PSU turns on. I do not know where to go from here, I don’t know how to test a motherboard to see if there’s an issue but it’s confusing since the Ethernet port lights are fine and the red hardware fault light will come on ONLY if the CPU isn’t plugged into the PSU. I have no spare parts to switch in and out to test things at this point.
Please help

System specs
AMD 5900x
Evga FTW 3080ti
Samsung 980 pro
Samsung 990 pro
G skill trident z neo dd4 16gbx4
Asus ROG strix x570-e gaming ATX
Super flower leadex titanium 1000w 80+
 
Two PSU's did not work - correct?

One being the Super flower leadex titanium 1000w 80+: What was the other PSU?

No beep codes: are you sure that there is a working speaker installed?

Testing PSU with a multimeter: how was that done?

Something like this Lifewire process:

https://www.lifewire.com/how-to-manually-test-a-power-supply-with-a-multimeter-2626158

Take a very close look at the case connections and verify the connection s via the motherboard's User Guide/Manual along with the case documentation.
 
Two PSU's did not work - correct?

One being the Super flower leadex titanium 1000w 80+: What was the other PSU?

No beep codes: are you sure that there is a working speaker installed?

Testing PSU with a multimeter: how was that done?

Something like this Lifewire process:

https://www.lifewire.com/how-to-manually-test-a-power-supply-with-a-multimeter-2626158

Take a very close look at the case connections and verify the connection s via the motherboard's User Guide/Manual along with the case documentation.
The second PSU was a EVGA 1000w G6

There may not be a speaker, but normally when I turn it on I hear the beep so I had assumed.

I jumped the PSU using a paper clip and tested the fan, the fan on the super flower didn’t move unless I slowly pressed the on button, which is what prompted me to buy a replacement. I texted the connections of each chord, 24 pin, the PCIE and the CPU cables all voltages were within the expected range
No chords were changed during this process and the computer has been working perfectly up until now, but I didn’t check all chords were properly connected using the manuals I have.
 
Two PSU's did not work - correct?

One being the Super flower leadex titanium 1000w 80+: What was the other PSU?

No beep codes: are you sure that there is a working speaker installed?

Testing PSU with a multimeter: how was that done?

Something like this Lifewire process:

https://www.lifewire.com/how-to-manually-test-a-power-supply-with-a-multimeter-2626158

Take a very close look at the case connections and verify the connection s via the motherboard's User Guide/Manual along with the case documentation.
I just read that link you sent, that is the exact process I used.
 
Interesting.

Swap in a new CMOS battery just as a matter of elimination.

And again - another close look at the case connections/front panel. They can be confusing.

Another thought: inspect the I/O Panel and all connections - inside and out. May be a short somewhere.
 
Interesting.

Swap in a new CMOS battery just as a matter of elimination.

And again - another close look at the case connections/front panel. They can be confusing.

Another thought: inspect the I/O Panel and all connections - inside and out. May be a short somewhere.
I actually just replaced the CMOS battery about an hour ago to eliminate that.
Pulled the entire board out cleaned everything reset the CPU checked all the front port connections and nothing seems loose. Nothing is inserted Into incorrect spot. Just to be safe though I completely disassembled everything. Idk how to tell if there’s a short but nothing seems to be out of place or touching something it shouldn’t.
Got everything back together still no change.
 
I’ve also tested the motherboard outside the case to ensure the case isn’t shorting anything. Still no change in behavior.
Figured out my previous PSU was in eco mode which is why the fan didn’t spin initially. I’m becoming more suspicious that the motherboard is the issue, and that maybe the 24 pin connector on the board was somehow damaged.
 
Only the cables that came with each respective PSU were used when the PSU was installed - correct?

Inspect the 24 pin connector and surroundings with a bright flashlight and magnifying glass.

= = = =

Going back a bit:

"I got the mounts I installed the SSD. Plugged everything in and now my PC won’t turn on."

Are you able to take three or four photographs showing the mounts, SSD, motherboard, etc.? Post the photographs here via imgur (www.imgur.com).

Maybe a close up of the 24 pin connector.

Just with the possibility that someone may spot something.
 
Only the cables that came with each respective PSU were used when the PSU was installed - correct?

Inspect the 24 pin connector and surroundings with a bright flashlight and magnifying glass.

= = = =

Going back a bit:

"I got the mounts I installed the SSD. Plugged everything in and now my PC won’t turn on."

Are you able to take three or four photographs showing the mounts, SSD, motherboard, etc.? Post the photographs here via imgur (www.imgur.com).

Maybe a close up of the 24 pin connector.

Just with the possibility that someone may spot something.
Only the cables that came with each PSU were used yes.
I haven’t noticed anything off with the MB or the 24 pin connector but I’ll post some pictures once I get home!
The mounts I’m referring to are a pack of SSD mounts to Install the SSD, I’ve since removed the SSD and the mount to make sure everything that’s installed are only pieces that were present the last time it worked.
 
Only the cables that came with each respective PSU were used when the PSU was installed - correct?

Inspect the 24 pin connector and surroundings with a bright flashlight and magnifying glass.

= = = =

Going back a bit:

"I got the mounts I installed the SSD. Plugged everything in and now my PC won’t turn on."

Are you able to take three or four photographs showing the mounts, SSD, motherboard, etc.? Post the photographs here via imgur (www.imgur.com).

Maybe a close up of the 24 pin connector.

Just with the possibility that someone may spot something.
Sorry for the delay, appreciate the help
I took a few more than 4 photos just trying to get as much detail as I could. Let me know if o can show anything else!
View: https://imgur.com/a/6OTZlQ1
 
I did not note any signs of damage in the photographs.

However the photographs do not show how the PC was put together or configured.

This motherboard?

https://dlcdnets.asus.com/pub/ASUS/...G_UM_v2_WEB.pdf?model=ROG STRIX X570-E GAMING

My recommendation.

Confirm that I found the correct User Guide/Manual.

First read through the entire User Guide/Manaul.

Verify that all components are supported.

Then go through the manual again while doublechecking all connections, card seatings, RAM, jumpers, and case connections. Pay attention to all fine print and warnings. Go to the manufacturer's website for more up-to-date information.

Do the same for all installed components - check the installation instructions.

Also look at the applicable configuration settings.

For the most part simply start over, take your time, ensure that you are correctly making all connections etc. along with the proper configuration settings.

Keep notes: if there is some problem or something that is not understood then stop, do some more reading/research, and/or post accordingly.

Be very leery of any internet fixes you might find.

Hopefully the problem is simply some error of omission or commission on your part.
 
I did not note any signs of damage in the photographs.

However the photographs do not show how the PC was put together or configured.

This motherboard?

https://dlcdnets.asus.com/pub/ASUS/mb/SocketAM4/ROG_STRIX_X570-E_GAMING/E15826_ROG_STRIX_X570-E_GAMING_UM_v2_WEB.pdf?model=ROG STRIX X570-E GAMING

My recommendation.

Confirm that I found the correct User Guide/Manual.

First read through the entire User Guide/Manaul.

Verify that all components are supported.

Then go through the manual again while doublechecking all connections, card seatings, RAM, jumpers, and case connections. Pay attention to all fine print and warnings. Go to the manufacturer's website for more up-to-date information.

Do the same for all installed components - check the installation instructions.

Also look at the applicable configuration settings.

For the most part simply start over, take your time, ensure that you are correctly making all connections etc. along with the proper configuration settings.

Keep notes: if there is some problem or something that is not understood then stop, do some more reading/research, and/or post accordingly.

Be very leery of any internet fixes you might find.

Hopefully the problem is simply some error of omission or commission on your part.
Yes that is my motherboards manual. I still have all the original packaging and I did read through the manual and confirmed that all my parts were supported.
The PC worked perfectly for 2.5 years and after the most recent attempt to install the new 990 pro, which is supported, something I’ve done multiple times before, it just didn’t respond.
Since this happened I’ve taken it apart, Cleaned, reset and double checked everything I possibly could, my assumption is it’s one of the only 3 pieces of equipment I haven’t ruled out, the GPU, CPU or the motherboard.
I have a cheap mATX coming to test with to see if I get the same issue or if the PC starts with the bare minimum, ruling out the CPU.
If the new board doesn’t start up then I’ll test it with a friend’s spare am4 processor and see if that’s the issue.
At this point, if it’s either of those 3 pieces of hardware, if it’s CPU or MB my plan is the same, I don’t want to replace a 300+ dollar board that isn’t supported by the next generation so I’ll be upgrading the MB to an am5, which would require me to also replace the CPU. So I’m hoping it’s one of those 2 issues, my fear is that I somehow didn’t reinstall the GPU properly and that somehow fried my board AND the GPU which would be much more expensive to replace.
So fingers crossed.
I’m not sure that’s the case as when I did reinstall it, I tested the PC first before plugging the GPU into the PSU at all so I would be surprised if that fried the board.
I appreciate the help! I’ve built quite a few PCs and troubleshooted more but I’ve never had an issue this absolute.
 
I read the Op. Read the following posts. Seems like you've tried everything except one thing, removing the SSD. That's not mentioned anywhere.

Side note, the Samsung 990Pro is an NVME, not SSD, although they share the same M.2 form factor, so you'd need to know if the port you plugged the NVME into is in fact an NVME capable port, not an SSD capable port.
 
I read the Op. Read the following posts. Seems like you've tried everything except one thing, removing the SSD. That's not mentioned anywhere.

Side note, the Samsung 990Pro is an NVME, not SSD, although they share the same M.2 form factor, so you'd need to know if the port you plugged the NVME into is in fact an NVME capable port, not an SSD capable port.
I apologize, I use SSD loosely, I mentioned removing all hardware that was not present the last time the PC was working, and that I did a piece by piece test, removing all pieces of hardware 1 by 1 and testing, including the drives.
And yes the motherboard has 2 nvme ports that support both the 980 and 990 pro!
Thank you!
 
Just wanted to come back and update the thread, my interim mATX board ti test showed up, plugged it in and tested, started right up. Introduced each piece of hardware, ram, GPU, SSDs one by one individually and they all worked so o have co firmed the motherboard somehow was damaged, although I slave no idea how.
Thank you everyone for the help!