[SOLVED] PC crashes and wont POST (No response from USB or Monitor)

[Böffe]

Hi!

Sorry for my English and for my long description

So I have run into some problems with my new build.
I just recently (this Christmas) upgraded my CPU, RAM, and Motherboard.
The PC ran smoothly for about 1 month, but then all of a sudden when I was tabbing out from chrome it went to windows repair mode and crashed.
The screen just turned black and my mouse + keyboard's lights started flickering.
This continued for 5 seconds and then all USB devices died, even though my PC fans and all hardware ran as usual.
So I restarted the PC and it would turn on, but no signal in USB devices or monitor (no posting I guess).

-I tried the 1 RAM stick at a time trick.
- I got a new PSU, as the previous one was old.
-I tried flashing BIOS and replacing the CMOS battery.

After this, I concluded that this was a MOBO problem and got a new one.
When I changed MOBO it didn't work at first, with no USB + black screen. But then I realized I hadn't connected my SATA cables to the motherboard. When I did this it booted!

It ran smoothly for about a week, and then it crashed again, the same thing again.
But this time it actually booted when I restarted it. It repaired windows and was working fine.
The next day it died again, the same thing again.

This time it won't boot and still no screen + USB but everything else is running.
Everything inside the case looks fine, nothing looks burnt or anything.

So I decided to hand my PC to someone professional.
I handed it in and they called me a week later saying they had tried:
- Switched GPU but it didn't work.
-They said they had troubleshooted the RAM (don't know how) and they didn't find any problems.
- They said they cant troubleshoot the CPU (they don't have any spares right now).

And they told me they would now troubleshoot the motherboard (even though I just got a new one :/ ).

All this is leaving me very confused as to what the problem really is.
I have thought that it could be a CPU problem but as I researched, it seems like it shouldn't be.
My theory is that there is some kind of shorting somewhere, or possibly a software related problem.
Everything in the PC is new except for the Hardrives.
My SSD with windows dates back to 2012.

At this point im kinda desperate, im thankfull for all the help I can get.

Specs:
PSU - Corsair CV Series 650W
GPU - Nvidia GeForce GTX 980
CPU - AMD Ryzen 7 5800x
CPU fan - Cooler master hyper 212 black edition
MOBO: Gigabyte B550 GAMING X v2
RAM : 2x8GB Corsair Vengeance RGB PRO DDR4 3600Mhz

 

[kurdtnz]

When you have changed motherboards, did you do a new install of Windows? (strongly advised.)

 

[Böffe]

When you have changed motherboards, did you do a new install of Windows? (strongly advised.)

Oh, I did actually not. Would that cause a problem like this?

 

[kurdtnz]

Oh, I did actually not. Would that cause a problem like this?

Yes, you can get all sorts of problems when changing important hardware and not doing a new install of windows. It's also advised to clear CMOS after doing a new install.

 

[Böffe]

Yes, you can get all sorts of problems when changing important hardware and not doing a new install of windows. It's also advised to clear CMOS after doing a new install.

I see, well rip. Is there a fix then? Or like anything i can do to fix it? Cause no problems are found in hardware. If not the cpu is busted.

 

[Satan-IR]

I see, well rip. Is there a fix then? Or like anything i can do to fix it?

Yes actually, you can do a clean installation of Windows for starters and see if that resovles the issue.

As far as shorting goes you can bread-board the motherboard outside the case on a non-conductive surface with minimum components MOBO+CPU+RAM (1 stick)+GPU+PSU. If it boots into BIOS you can start adding parts one by one to see the presence of which one would replicate the problem. Other RAM module, storage etc.

 

[Böffe]

Yes actually, you can do a clean installation of Windows for starters and see if that resovles the issue.

As far as shorting goes you can breadboard the motherboard outside the case on a non-conductive surface with minimum components MOBO+CPU+RAM (1 stick)+GPU+PSU. If it boots into BIOS you can start adding parts one by one to see the presence of which one would replicate the problem. Other RAM module, storage etc.

Thank you, I will try!
So, how would one do a clean install of windows when the pc doesnt post? Im kind of new to pc building. Sorry for my low knowledge.

 

[Satan-IR]

Thank you, I will try!
So, how would one do a clean install of windows when the pc doesnt post? Im kind of new to pc building. Sorry for my low knowledge.

Well you said it works intermittnetly, if it doesn't POST yes you can't install anything obviously. Maybe you can try bread-boarding it. If they service center/shop/people you mentioned didn't do it already.

 

[Böffe]

Okay thank you!
I think thats the next step for them. Still waiting for results.
The thing that got me confused is why it worked sometimes, fixed itself and then worked again. So if i understand you correctly this windows problem could cause damage to hardware? And that this must be a hardware related issue that could be caused by windows?

 

[Satan-IR]

Okay thank you!
I think thats the next step for them. Still waiting for results.
The thing that got me confused is why it worked sometimes, fixed itself and then worked again. So if i understand you correctly this windows problem could cause damage to hardware? And that this must be a hardware related issue that could be caused by windows?

No Windows can't cause hardware damage as such. When you try booting and working with a Windows that was insatalled on other/older hardware there's usually a large variety of problems because the Windows was setup to suit that old hardware with their relative drivers and settings.

Problems that can vary from no boot to trange and erratic behavior of hardware.

 

[Böffe]

No Windows can't cause hardware damage as such. When you try booting and working with a Windows that was insatalled on other/older hardware there's usually a large variety of problems because the Windows was setup to suit that old hardware with their relative drivers and settings.

Problems that can vary from no boot to trange and erratic behavior of hardware.

okay thank you.
So its still a hardware issue? Or do you mean the corrupted windows could cause the pc to not boot? In that case, would replacing the hardrive with a new Ssd containing windows be a solution.
Sorry again for my low tech compentence

 

[Satan-IR]

okay thank you.
So its still a hardware issue? Or do you mean the corrupted windows could cause the pc to not boot? In that case, would replacing the hardrive with a new Ssd containing windows be a solution.
Sorry again for my low tech compentence

No problem. No I can't be certain and actually I didn't say it's a hardware issue and said first that a clean install of Windows might help.

No actually, if the problem is old installation of Windows replacing the HDD with another one contaning a Windows installed on other hardware is basically the same situation you're already in.

Clean installation of Windows means installing from scratch on the same hardware setup you have. Without anything form another machine/PC.

 

[Böffe]

I see, thanks for the help!

I guess I will have to wait for the service company to finish their troubleshooting and see.
If they dont find anything, I dont know what to do. Maybe try booting with windows safe mode and see if it boots, and then try a clean install of windows. Otherwise i have to conclude my cpu is busted i guess :/

Rip in pepperonies

 

[Böffe]

No problem. No I can't be certain and actually I didn't say it's a hardware issue and said first that a clean install of Windows might help.

No actually, if the problem is old installation of Windows replacing the HDD with another one contaning a Windows installed on other hardware is basically the same situation you're already in.

Clean installation of Windows means installing from scratch on the same hardware setup you have. Without anything form another machine/PC.

I have one more question.
I just realized that i haven’t updated bios on my new mobo, could this cause the crashes?
My mobo states its ”3rd gen ready” but im unsure if 5800x is 3rd gen?

Another thing, could the windows crash affect bios? Because i also realized I have not tried reseting bios with the new mobo hehe.

 

[Satan-IR]

No Ryzen 7 5800x is 4th generation of Zen CPUs if memory serves right. If the BIOS needed to be updated before sueing the motherboard with the Ryzen 7 5800x that might cause problems such as the board not recognising the CPU but you said the system worked for a month or so and crashes started later. So it's not a matter of the motherboard not being ready for the CPU because of old BIOS.

Also you'd probbaly need a 3th gen CPU to put on the board then update the BIOS and then use the Ryzen 7 5800x with the board. If you have no prior experience with updating BIOSes I suggest you have some qualified technician or somebody with experience do it.

No Windows crashes can't affect BIOS as such. Resetting the BIOS and removing the COMS battery for a while and putting it back won't hurt. You can try that but as long as you intend to use Windows which was installed/configured on other hardware/machine with your current system/machine the problems would most probably persist.

 

[Böffe]

No Ryzen 7 5800x is 4th generation of Zen CPUs if memory serves right. If the BIOS needed to be updated before sueing the motherboard with the Ryzen 7 5800x that might cause problems such as the board not recognising the CPU but you said the system worked for a month or so and crashes started later. So it's not a matter of the motherboard not being ready for the CPU because of old BIOS.

Also you'd probbaly need a 3th gen CPU to put on the board then update the BIOS and then use the Ryzen 7 5800x with the board. If you have no prior experience with updating BIOSes I suggest you have some qualified technician or somebody with experience do it.

No Windows crashes can't affect BIOS as such. Resetting the BIOS and removing the COMS battery for a while and putting it back won't hurt. You can try that but as long as you intend to use Windows which was installed/configured on other hardware/machine with your current system/machine the problems would most probably persist.

Thank you!

I will see what they come up with when they troubleshoot the MOBO, I have given them the information about windows and that I haven't tried reseting bios. They said that it was valuable information so thank you alot!

I will update when I have an fix and what the problem was.

 

[Böffe]

No Ryzen 7 5800x is 4th generation of Zen CPUs if memory serves right. If the BIOS needed to be updated before sueing the motherboard with the Ryzen 7 5800x that might cause problems such as the board not recognising the CPU but you said the system worked for a month or so and crashes started later. So it's not a matter of the motherboard not being ready for the CPU because of old BIOS.

Also you'd probbaly need a 3th gen CPU to put on the board then update the BIOS and then use the Ryzen 7 5800x with the board. If you have no prior experience with updating BIOSes I suggest you have some qualified technician or somebody with experience do it.

No Windows crashes can't affect BIOS as such. Resetting the BIOS and removing the COMS battery for a while and putting it back won't hurt. You can try that but as long as you intend to use Windows which was installed/configured on other hardware/machine with your current system/machine the problems would most probably persist.

Update:

So apparently the technicians found that the "graphics part" or "internal graphics" or something (not remembering the words) was broken on my new motherboard. This makes me think that it was this that happened to my previous one too. This means there is a damaged component damaging my mobo right? Like what do I do now? I red that it can't be the CPU causing this but it can be the GPU or my keyboard, mouse, screen, or branch outlet.

If its the GPU, is there any way to spot this? Its super weird because all these components worked in my previous build.

I am even more confused now.

Can it be my ram causing this? Like i used the XMP setting on it.

 

[Satan-IR]

You can reset BIOS and disable XMP if you think that might cause instability.

Your motherboard has no internal graphics some CPUs have integrated GPUs and can output video signal without a discrete graphics card, from motherboard graphics ports to the monitor.

I would do a clean installation of Windows as I said before.

 

[Böffe]

You can reset BIOS and disable XMP if you think that might cause instability.

Your motherboard has no internal graphics some CPUs have integrated GPUs and can output video signal without a discrete graphics card, from motherboard graphics ports to the monitor.

I would do a clean installation of Windows as I said before.

Update:

I sent back the broken motherboard and bought an MSI mobo.
I handed it to the service company and they breadboarded with only CPU, the new mobo, and 1 RAM stick.
The mobo wouldn't bypass the CPU stage when Posting so it has to be the CPU.
I have a warranty on the CPU so tomorrow I'm going to hand a new CPU to the service company and return the old one if it works.

I will update if it worked. It seems as though it was the CPU all along, which was my biggest fear.
It doesn't surprise me as it wasn't sent in its original packaging. It seems like it was a returned product and thereby it was cheaper.

The service company has said they will rebuild my pc and do a clean install of windows as well. Hopefully, I will have a fully functional PC next week!

 

[Böffe]

Update:

I just got a call from the service company that the pc is now fully working.
It turns out it was the CPU all along.

Thank you for your help guys!