[SOLVED] Ryzen PC wont POST after cleaning. Fans does spin (high speed)

[Janch]

Hi All
Im running out of ideas what to do.
I had running system for almost a year and decided to remove one of annoying ticking fans and clean the whole system as it is quite dusty in my apartment. I also applied new thermal paste but didnt remove the CPU itself, only the cooler.

After i cleaned everything and put back together the PC would power on but i instantly noticed that the main exhaust fan wouldnt turn OFF as i had set in the BIOS (i set it to turn on only @40C) and i noticed both CPU and main exhaust fans would spin at very high rpm.
There are no signal for the monitor at all.
long story short of what i did - i took everything apart, examined every single component and wire, and put back together but still nothing - same result.
I did remove the BIOS battery and also pressed the bios flashback button in hopes of some result.
I have MB speaker hooked up and there are no beeps as well. Only time i beeped 3 long times and then power cycled was when i tested single RAM sticks in different sockets and put it the socket that is not supposed to be used with single RAM stick.

The build
Ryzen 1700
Asus RX570 4GB GPU
2X4GB DDR4 3200Mhz RAM
M.2 SSD
MSI B450M motherboard

Everything worked before the cleaning and i originally built it. I was careful and it gets unplugged from the power each time i would touch something.
There were no complications when i took something apart, no weird noise or flexing of the components

unfortunately i do not have VGA or DVI cables so i cant test the system with another GPU at the moment (that only has these outputs)

 

[drivinfast247]

Did you try reseating the CPU in the socket?

 

[Janch]

Did you try reseating the CPU in the socket?

No I didn't because i never removed it.
On the other hand it is the only thing i didn't touch and kinda the last thing to try and check.

Oh well. I'll give it a try while i get frustrated

 

[davidgirgis]

Get a DVI cable.
Take the entire thing out of the case. Including the power supply and all cables.
Plug in only the necessary components to troubleshoot the computer outside of the case.
Re-seat the CPU.
Use only one RAM chip.

Let us know.

 

[davidgirgis]

Don't use a video card. Don't use any storage.

The purpose of all this is to get it to POST at all. Let us know.

 

[drivinfast247]

The pulling off of the CPU cooler can sometimes cause it to shift a bit in the socket.

 

[davidgirgis]

Never mind, you need a graphics card with this CPU...
Which means, you need to plug your monitor into the graphics card, not the motherboard's video out.

Do you have another computer, you borrow parts from, like another video card? or possibly RAM? or CPU?

 

[Janch]

its most likely a bunked motherboard or maybe your hard drive/ssd cables?

I have M.2 SSD which bolts directly on the Motherboard

Get a DVI cable.
Take the entire thing out of the case. Including the power supply and all cables.
Plug in only the necessary components to troubleshoot the computer outside of the case.
Re-seat the CPU.
Use only one RAM chip.

Let us know.

I will try taking it all out, although when i tested it in the first place I only plugged necessary things in.
Im taking it apart again.
and yes i do need Dedicated GPU to even get into BIOS.
And i am aware that i need to plug it into the GPU.
Im quite good with hardware and electronics (wiring and stuff) and tried pretty much everything before i made this thread.
I will go and bug VGA cable so that i can test other GPU before i take everything apart and lay it on my desk
BTW Re-seating CPU didnt help.

 

[davidgirgis]

OK, we trust your abilities with electronics...do what's necessary.

 

[Janch]

Changing GPU didnt help.
I will take everything apart and set it on table...

If anyone has any idea or experience with similar case - please let me know

 

[g-unit1111]

The pulling off of the CPU cooler can sometimes cause it to shift a bit in the socket.

That could be a possibility that something could have got bent / broken in the cleaning process. Alternately I'd put money on the PSU being the problem.

OP - what is your exact make and model of your PSU?

 

[Janch]

That could be a possibility that something could have got bent / broken in the cleaning process. Alternately I'd put money on the PSU being the problem.

OP - what is your exact make and model of your PSU?

PSU is - Chieftech CTG-750C (750Watt)

Another thing i noticed - Mouse and keyboard lights doesnt turn on but the phone charges.

I have the setup on the table and i tried all scenarios how to try and turn it on - no luck.

 

[g-unit1111]

PSU is - Chieftech CTG-750C (750Watt)

Another thing i noticed - Mouse and keyboard lights doesnt turn on but the phone charges.

I have the setup on the table and i tried all scenarios how to try and turn it on - no luck.

Yeah that could very well be the culprit. That thing has to go, it's a dumpster fire quality PSU. You should have at least a Seasonic Prime / Focus in that machine or a Corsair RMx, or EVGA G2/G3.

 

[Janch]

After cleaning everything again
removing batter, CPU, RAM, M.2 SSD - everything to bare bones and putting together it started.

there was a bug that i cant explain. But it booted......

 

[Janch]

It happened again after i restarted it many times successfully. One time it wouldnt Post and is stuck as before.
I will try and get another PSU to see if this is the fault and update you guys when i do.

 

[g-unit1111]

It happened again after i restarted it many times successfully. One time it wouldnt Post and is stuck as before.
I will try and get another PSU to see if this is the fault and update you guys when i do.

Make sure you get a quality PSU like the ones I listed. In this case, quality matters a lot more than quantity.

 

[davidgirgis]

Janch,

get another PSU. plug only the necessary right there on your desk.
then stress the heck out of it, to test stability. Use prime95 or similar, together with something like furmark. Do ten minutes, then turn it up to half an hour. Look at your temps. Did you install the CPU properly, i.e. no bent or broken pins, thin layer of evenly spread thermal paste, and the cooling installed correctly...
plug in more things, then stress and test and see how it behaves...

the USB ports not all working, or working intermittently leads me to believe that you might have faulty ports, but not necessarily a bricked mobo, you know what I mean...

Maybe you can live with a couple of bad USB ports, that you can avoid using, but the rest of the board works. Some computer is better than no computer...for the time being.

 

[Janch]

Janch,

get another PSU. plug only the necessary right there on your desk.
then stress the heck out of it, to test stability. Use prime95 or similar, together with something like furmark. Do ten minutes, then turn it up to half an hour. Look at your temps. Did you install the CPU properly, i.e. no bent or broken pins, thin layer of evenly spread thermal paste, and the cooling installed correctly...
plug in more things, then stress and test and see how it behaves...

the USB ports not all working, or working intermittently leads me to believe that you might have faulty ports, but not necessarily a bricked mobo, you know what I mean...

Maybe you can live with a couple of bad USB ports, that you can avoid using, but the rest of the board works. Some computer is better than no computer...for the time being.

So sometimes i get it to boot.
I dont know if its coincidence but last time when it went quiet on me, i switched back to another GPU (PCI express power only) and removed -> re-installed battery. it started. Then i changed back my original GPU and the PC booted normally except BIOS settings.
With the USB ports before i meant that it would not recognize the peripherals but power was sent out from ALL of the USB ports through my phone cable to charge it. So thats not an issue.

I 'm 100% sure i installed CPU correctly along with the cooler and everything else. and i did check the pins. Im being very careful with PC components but thank you for being skeptical.

I will upgrade my PSU and do the tests. hopefully very soon.

 

[tighteewhitey1111111]

Some BIOS will report voltage outputs from the Power Supply, and you can easily condemn a PSU if say for example BIOS reports 10 Volts on the 12 volt rail, etc...

OH. I just thought of something. Sometimes you have to boost the memory voltage to get it to run right. Or the vcore? (It's been a long time since I messed with motherboards and voltages, etc...) Maybe you need to make certain the voltages are correct for the CPU and memory?

The fact that all the fans are acting like it's overheating may mean it's actually overheating. Something to consider. What thermal paste did you use, and how much did you apply? Is the CPU fan actually spinning (vs. simply just being plugged in). Is it spinning in the right direction?

I agree with everyone on the basic troubleshooting technique of removing all non-essential hardware, and also the PSU is poor in quality and I wouldn't trust it. What happens with a poor-quality PSU is that it outputs low voltage which eventuall kills hardware like CPU, motherboard, hard drive, etc... If you are lucky your BIOS will report the several output voltages of the PSU. Also there are usually actual physical test points on the motherboard where you can probe with a multimeter in order to see the actual voltage being delivered to the hardware (vs. what the sticker on the side of the PSU says).