Question PC wont POST anymore after changing the case ?

[Ramiro.Giorgi]

So, yesterday i bought and installed my new pc case on my current pc (the case its the silverstone fara m1 micro atx)...everything seemed fine at first, it posted just fined i watch some youtube and everything. Today same thing, until i decided to connect another case fan (molex case fan). When i plugged it in it wont ecen turn the power on, i switched back to the other one, it powers on BUT the dram led and cpu led pf the motherboard turns red and after a few seconds it turns off, i unplug and connect again the psu power cable and it turns on alone (i dont touch the power button of the case) and same thing happens. So now it dosnt post, and i cant seem to make it work.

I had this pc components since august 2022 (except for the graphics card, that i recently bought it used) and they worked fine, i had these issue of dram an cpu light turning on and not posting but i solved it by resetting bios settings, pulling out the cmos battery waiting a few seconds and trying again but that doesnt seem to work now.. im getting worried becouse im thinking i fried my cpu or my motherboard, so i checked the cpu pins and they were fine. I also thought it was a problem with the standoffs of the motherboard they are quiet wierd, becouse when i put them and screw them in when i put the motherboard in the case, and screw it to the standoffs, this ones, at one point, start turning with the screws of the motherboard...but i put out the mother off the case and up the motherboard box and it happens same thing, dram and cpu lights turns on and power shuts down after a few seconds.

Sorry for the long post, but i wanted to be very especific haha. Any thoughts on how to solve this?

SYSTEM SPECS:
ryzen 5 5600 with id cooling se 224 xt
Asrock b550m pro4
Rx 6700 xt saphire pulse
2x8 gb patriot viper steel 3600mhz ram
2 ssds
2 hdds
Psu xfx 650 w 80 plus bronze

 

[CountMike]

So, yesterday i bought and installed my new pc case on my current pc (the case its the silverstone fara m1 micro atx)...everything seemed fine at first, it posted just fined i watch some youtube and everything. Today same thing, until i decided to connect another case fan (molex case fan). When i plugged it in it wont ecen turn the power on, i switched back to the other one, it powers on BUT the dram led and cpu led pf the motherboard turns red and after a few seconds it turns off, i unplug and connect again the psu power cable and it turns on alone (i dont touch the power button of the case) and same thing happens. So now it dosnt post, and i cant seem to make it work. I had this pc components since august 2022 (except for the graphics card, that i recently bought it used) and they worked fine, i had these issue of dram an cpu light turning on and not posting but i solved it by resetting bios settings, pulling out the cmos battery waiting a few seconds and trying again but that doesnt seem to work now.. im getting worried becouse im thinking i fried my cpu or my motherboard, so i checked the cpu pins and they were fine. I also thought it was a problem with the standoffs of the motherboard they are quiet wierd, becouse when i put them and screw them in when i put the motherboard in the case, and screw it to the standoffs, this ones, at one point, start turning with the screws of the motherboard...but i put out the mother off the case and up the motherboard box and it happens same thing, dram and cpu lights turns on and power shuts down after a few seconds.
Sorry for the long post, but i wanted to be very especific haha. Any thoughts on how to solve this?
Pc components:
SYSTEM SPECS:
ryzen 5 5600 with id cooling se 224 xt
Asrock b550m pro4
Rx 6700 xt saphire pulse
2x8 gb patriot viper steel 3600mhz ram
2 ssds
2 hdds
Psu xfx 650 w 80 plus bronze

Well, it looks like you didn't reassemble properly or even worse had a short to the case and burned something.
I would start right from beginning like when starting from anew. Start with minimal config (just PSU, MB with CPU and it's cooler) and look and listen for warnings. Without RAM and GPU it should give a set of audible warnings and as you ad parts warnings should change.

 

[Misgar]

Check under the mobo in the new case for short circuits caused by metal stand-off pillars in the wrong place. If you're very, very lucky, the short won't have done any damage. More likely it'll mean buying a new mobo. The CPU, GPU and RAM might still be OK

It's easy to strip the tapped thread in a thin metal baseplate on a cheap case. The result is a pillar which will never tighten down and spins all the time under the screwdriver. That would account for the stand off rotating when you tried to tighten the board fixing screws. #

Similarly, if you fit an M3 or 4-40 screw into the top of a pillar tapped 6-32, it will just spin round.

Alternatively, you might have fitted a 4-40 UNC or M3 (metric) threaded pillar into a hole in the metal chassis base plate tapped with a 6-32 UNC thread. The result is a pillar that spins round and round.

At first sight, to the untrained eye, 4-40 UNC and M3 screws look similar. 6-32 UNC has a coarser thread. It's even possible to have pillars tapped UNC one end and metric the other. It just adds to the fun and confusion of building a PC.

Take care when tightenting computer screws. You can end up stripping threads tapped in thin sheet metal, if you fit screws with the wrong thread.

 

[Ramiro.Giorgi]

Well, it looks like you didn't reassemble properly or even worse had a short to the case and burned something.
I would start right from beginning like when starting from anew. Start with minimal config (just PSU, MB with CPU and it's cooler) and look and listen for warnings. Without RAM and GPU it should give a set of audible warnings and as you ad parts warnings should change.

Oh, so you really think its a short on one component? How can i be sure of that? And i dont understand what happened, i just changed the pc case. Isnt this weird?? I will try to do the things you said and update you. Thx for the reply.

 

[Ramiro.Giorgi]

Check under the mobo in the new case for short circuits caused by metal stand-off pillars in the wrong place. If you're very, very lucky, the short won't have done any damage. More likely it'll mean buying a new mobo. The CPU, GPU and RAM might still be OK

It's easy to strip the tapped thread in a thin metal baseplate on a cheap case. The result is a pillar which will never tighten down and spins all the time under the screwdriver. That would account for the stand off rotating when you tried to tighten the board fixing screws. #

Similarly, if you fit an M3 or 4-40 screw into the top of a pillar tapped 6-32, it will just spin round.

Alternatively, you might have fitted a 4-40 UNC or M3 (metric) threaded pillar into a hole in the metal chassis base plate tapped with a 6-32 UNC thread. The result is a pillar that spins round and round.

At first sight, to the untrained eye, 4-40 UNC and M3 screws look similar. 6-32 UNC has a coarser thread. It's even possible to have pillars tapped UNC one end and metric the other. It just adds to the fun and confusion of building a PC.

Take care when tightenting computer screws. You can end up stripping threads tapped in thin sheet metal, if you fit screws with the wrong thread.

I fixed the standoffs spinning when i turn the screws. I just had the wrong screws in place, like you said.so you think its a short on one component too? I just wanna cry lol. How can i be sure its a short component? That means i have to replace it? Like its the only option right?

 

[CountMike]

Oh, so you really think its a short on one component? How can i be sure of that? And i dont understand what happened, i just changed the pc case. Isnt this weird?? I will try to do the things you said and update you. Thx for the reply.

When changing the case you have to watch for spacers under the MB, they have to be right under the holes and none where there are no holes. That's most common mistake. Other common problems is at the rear side where it meats rear panel and grounding tabs for ports.

 

[Ramiro.Giorgi]

The spacers are the standoffs? Just to trying to understand it haha. And i put every standoff in the cases holes where i saw it corresponded to hole in the motherboard. You think that should be the issue?

 

[CountMike]

The spacers are the standoffs? Just to trying to understand it haha. And i put every standoff in the cases holes where i saw it corresponded to hole in the motherboard. You think that should be the issue?

Yeah, spacers, screw in standoffs, whatever just so they are only onder the holes in the MB.

 

[Misgar]

Modern cases come with dozens of holes for standoffs (spacers, pillars) or so it seems.

MicroATX and full size ATX mobos have a number of standoff positions in common, but a few are in different places.

It's vital you only fit standoffs under the screw holes in your motherboard. Just one metal standoff in the wrong place and and it's bang, splat, bye bye motherboard, sometimes accompanied by the "magic smoke".

Short circuits wouldn't happen if you used insulating standoffs, but at least one standoff has to be metal to provide a reference ground (earth) between the board and the computer case.

Without physically standing in front of your computer, it's not possible to be sure of anything. All we outsiders know is you say the computer was working fine in the old case and it's not working in the new case.

When we theorise about short circuits, it's only a guess on our part, based on common mistakes made by people who haven't built many computers. For all we know, the fault could be something entirely different.

 

[Ramiro.Giorgi]

What is weird for me is that everything worked fine in te n

Modern cases come with dozens of holes for standoffs (spacers, pillars) or so it seems.

MicroATX and full size ATX mobos have a number of standoff positions in common, but a few are in different places.

It's vital you only fit standoffs under the screw holes in your motherboard. Just one metal standoff in the wrong place and and it's bang, splat, bye bye motherboard, sometimes accompanied by the "magic smoke".

Short circuits wouldn't happen if you used insulating standoffs, but at least one standoff has to be metal to provide a reference ground (earth) between the board and the computer case.

Without physically standing in front of your computer, it's not possible to be sure of anything. All we outsiders know is you say the computer was working fine in the old case and it's not working in the new case.

When we theorise about short circuits, it's only a guess on our part, based on common mistakes made by people who haven't built many computers. For all we know, the fault could be something entirely different.

What is weird to me is that everything worked fine in the new case until y decided to change the fan that was on the front of the pc. Im gonna explain it more, maybe that helps. When i first instaled the components on the pc i put 2 fans in the front and one in the back of the case that were molex fans. Becouse i only have a molex connector for two molex fans and have 3 molex fans. I only connected one of the two front fans and the one in the back. Everything booted normal, spent the entire day with the pc, and nothing bad happened. Next day i woke up from a nap and decided to change the connected molex fan for the other ( i didnt change the fan on the case, they are all on the pc case. I just connected a different molex fan to the psu conector) and thats when it didnt booted. I change the connected fan to the original and it boots but with the dram and cpu red light on, i tried to turn it of by the power button and it didnt shut down, so i pressed the psu button to shut it down and now every time i want to turn it on i have to do it by the psu button, and the pc lights up woth the 2 red lights on (cpu and dram) and it shuts down after 2 seconds or so. I cant turn it on using only the power button. This is whats weird for me, becouse i didnt connected anything bad from the motherboard, could be the pc fans what are malfunctioning?? Or could that happen to be the thing it fried the mobo? Or maybe is the psu??

 

[Ramiro.Giorgi]

Well, it looks like you didn't reassemble properly or even worse had a short to the case and burned something.
I would start right from beginning like when starting from anew. Start with minimal config (just PSU, MB with CPU and it's cooler) and look and listen for warnings. Without RAM and GPU it should give a set of audible warnings and as you ad parts warnings should change.

I just did what u said, i have the mobo on the case with the cpu and plugged just cpu, mobo cables. No ram and no gpu. And samething happens. It turns on for two seconds and then it shuts down. Those this mean is the motherboard?

 

[stonecarver]

Could be the molex connection from fan to molex on power supply could have arced and messed up power supply. I've seen fan molex connectors where the pins have backed out and touched pin next to it and popped supply. I would test just min system outside of case, no fans with different power supply.

 

[Ramiro.Giorgi]

Could be the molex connection from fan to molex on power supply could have arced and messed up power supply. I've seen fan molex connectors where the pins have backed out and touched pin next to it and popped supply. I would test just min system outside of case, no fans with different power supply.

I just tryed to turn it on with minimum cables on the motherboard, everything was unplugged, except for cpu,mobo cables, and of course cpu cooler. But same thing happens. I even tried to boot it with no cms battery just for the sake of it, and same thing. I will try to attach an image of the molex conector, but that could have been the issue, and motherboard is no longer a problem? Now is psu?

 

[stonecarver]

It still could be the motherboard is an issue. Switching the power supply will rule it out or point to motherboard. Do you have a tester video card laying around to use.

When I say min , how I test Motherboard, 1 stick of memory, good known power supply, No hard drive "depends" battery installed. mouse/keyboard and monitor.

No fans, no RBG, no hard drives again " depends" out of case

 

[Ramiro.Giorgi]

Could be the molex connection from fan to molex on power supply could have arced and messed up power supply. I've seen fan molex connectors where the pins have backed out and touched pin next to it and popped supply. I would test just min system outside of case, no fans with different power supply.

MolexHere is the pic of the molex connectpr dude

 

[Ramiro.Giorgi]

It still could be the motherboard is an issue. Switching the power supply will rule it out or point to motherboard. Do you have a tester video card laying around to use.

When I say min , how I test Motherboard, 1 stick of memory, good known power supply, No hard drive "depends" battery installed. mouse/keyboard and monitor.

No fans, no RBG, no hard drives again " depends" out of case

Mm i dont have any other video card, just my mane one, 6700 xt. I was thinking of using my brothers generic psu to try to see if that is the problem. Is that a good idea or i should just forget it couse its a generic 500w power supply ? Haha

 

[stonecarver]

For basic testing it will do , your just trying to boot to at least bios.

 

[Ramiro.Giorgi]

For basic testing it will do , your just trying to boot to at least bios.

I have an issue... i just checked my brother and mother PSU and i realized that the cpu cable of the psu has only 4 pins and my motherboard has 8 pins. I cannot plug the 4 pin in there right?

 

[Randi Poling]

I have an issue... i just checked my brother and mother PSU and i realized that the cpu cable of the psu has only 4 pins and my motherboard has 8 pins. I cannot plug the 4 pin in there right?

You cannnnn, just it will potentially be power limited? It sounds like maybe, while installing the mobo, you might have scratched/damaged some traces on the board. Check the underside for any damage. (Im assuming this is the case since youve already tried it on the mobo box.)

 

[Ramiro.Giorgi]

You cannnnn, just it will potentially be power limited? It sounds like maybe, while installing the mobo, you might have scratched/damaged some traces on the board. Check the underside for any damage.

I just finished tryin with another psu...same f#@&%g error hahah. I though that was gonna be it. If psu its not the error, how can i narrow it down to the motherboard or cpu? I dont have another ryzen cpu. Should i test just for gods sake the power supply on my mothers computer or it runs the posibility of shortage too.

 

[Randi Poling]

I just finished tryin with another psu...same f#@&%g error hahah. I though that was gonna be it. If psu its not the error, how can i narrow it down to the motherboard or cpu? I dont have another ryzen cpu. Should i test just for gods sake the power supply on my mothers computer or it runs the posibility of shortage too.

I would honestly take the board out of the case, and look at the underside of it for any damage near the holes on the board from when you tried to install it.

Other than the above, if theres no damage, it is possible the CPU just decided it didnt want to live on anymore.

 

[Ramiro.Giorgi]

I would honestly take the board out of the case, and look at the underside of it for any damage near the holes on the board from when you tried to install it.

Other than the above, if theres no damage, it is possible the CPU just decided it didnt want to live on anymore.

Im doing exactly that at the moment. The thing is i dont really see nothin unusual. I dont know what to look for exactly but it seems just fine. And if that was the issue, why when i installed it the first time it worked perfectly but then i disconected a fan and decided not to work anymore? That should mean is the cpu?

 

[Randi Poling]

Im doing exactly that at the moment. The thing is i dont really see nothin unusual. I dont know what to look for exactly but it seems just fine. And if that was the issue, why when i installed it the first time it worked perfectly but then i disconected a fan and decided not to work anymore? That should mean is the cpu?

Hmm... Was the power plugged in when you disconnected the fan? Couldve shorted out the board. In this case, if you can, try another CPU.

 

[stonecarver]

So your down to CPU or Motherboard. I'm just going to say do you have any one who has same socket/ family of motherboard to test CPU and or like just said another CPU to test on your board.

 

[Ramiro.Giorgi]

Hmm... Was the power plugged in when you disconnected the fan? Couldve shorted out the board. In this case, if you can, try another CPU.

I think the cable was plugged in in the psu but i turned of the psu button. This way con still end in shoryage on the motherboard? Regreteadly i dont have another amd cpu 🙁