Question Upgraded system turns on then off ?

clownprincerhymes

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Apr 19, 2018
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I just upgraded my system from a asus prime x570 pro mobo and 5600x CPU to an ASRock x870 mobo and 9600x CPU.

I also got a new PSU because I used a tester on my previous one and it didn't work. I've tried everything to get it to boot and stay powered on. Now I have a modular PSU and there's a wire that just says "600 watt" on it. It looks important like it should go somewhere but I can't find a place for it.

I took everything apart and built it again twice, made sure all connections are secure, nothing is in or on the back of the motherboard, and I've tried 2 CPU coolers.

Any ideas what could be the problem with my build?
 
A checklist to do: https://forums.tomshardware.com/thr...deo-output-troubleshooting-checklist.1285536/

Full system specs, including PSU make and model (or part number) is? Also, how old the PSU is, and was the PSU bought new or used/refurbished?

there's a wire that just says "600 watt" on it. It looks important like it should go somewhere but I can't find a place for it.
It plugs into Nvidia RTX 40- or 50-series GPU. If you do not have such GPU, you don't need to use that PCI-E power cable at all.

Any ideas what could be the problem with my build?
With so little info; dead: CPU, MoBo, RAM or all of them are dead.
 
Sounds like a circuitry short somewhere. Could be even screw touching the case. Recommend you don’t plug anything in but cpu , memory, power supply. Use the on chip GPU, don’t put the motherboard in the case, sit it on cardboard box plug into monitor and turn it on. Your board should have power button if not jumper the power swtch jumpers by touching it with screw driver or any metal to close the circuit should power on. If it behaves the same you may have bad board, bent cpu pins … ??? Also do you have another psu the short could be in it.
 
I just upgraded my system from a asus prime x570 pro mobo and 5600x CPU to an ASRock x870 mobo and 9600x CPU.

I also got a new PSU because I used a tester on my previous one and it didn't work. I've tried everything to get it to boot and stay powered on. Now I have a modular PSU and there's a wire that just says "600 watt" on it. It looks important like it should go somewhere but I can't find a place for it.

I took everything apart and built it again twice, made sure all connections are secure, nothing is in or on the back of the motherboard, and I've tried 2 CPU coolers.

Any ideas what could be the problem with my build?
Does it turn off completely or it restarts on its own after a few seconds?
 
A checklist to do: https://forums.tomshardware.com/thr...deo-output-troubleshooting-checklist.1285536/

Full system specs, including PSU make and model (or part number) is? Also, how old the PSU is, and was the PSU bought new or used/refurbished?


It plugs into Nvidia RTX 40- or 50-series GPU. If you do not have such GPU, you don't need to use that PCI-E power cable at all.


With so little info; dead: CPU, MoBo, RAM or all of them are dead.
As I said the PSU is brand new because I tested the last one and it wasn't working.

All parts have been purchased new Cooler master MWE 850 v3 PSU, ASRock x870 pro RS, 9600x CPU, 2X16GB KINGBANK DDR5 6000MHZ RAM, and the only holdover from the previous build is a xfx speedster MERC319 RADEON RX 7800XT.

It was in the system maybe 5 months before I decided to completely upgrade and I'm stuck In my current predicament.
 
Sounds like a circuitry short somewhere. Could be even screw touching the case. Recommend you don’t plug anything in but cpu , memory, power supply. Use the on chip GPU, don’t put the motherboard in the case, sit it on cardboard box plug into monitor and turn it on. Your board should have power button if not jumper the power swtch jumpers by touching it with screw driver or any metal to close the circuit should power on. If it behaves the same you may have bad board, bent cpu pins … ??? Also do you have another psu the short could be in it.
I just got Brand new PSU like I said.
 
Sounds like a circuitry short somewhere. Could be even screw touching the case. Recommend you don’t plug anything in but cpu , memory, power supply. Use the on chip GPU, don’t put the motherboard in the case, sit it on cardboard box plug into monitor and turn it on. Your board should have power button if not jumper the power swtch jumpers by touching it with screw driver or any metal to close the circuit should power on. If it behaves the same you may have bad board, bent cpu pins … ??? Also do you have another psu the short could be in it.
Like I said there's nothing in the motherboard or on the back.
 
and the only holdover from the previous build is a xfx speedster MERC319 RADEON RX 7800XT.
Remove the GPU from the system, plug monitor to MoBo and look if you can get an image.

I just got Brand new PSU like I said.
Just because PSU is new, doesn't mean it is good. CM MWE V3 is mediocre quality PSU (e.g on-par to Corsair RMe), and it may be enough. Though, personally, i wouldn't run mediocre quality PSU in any build that has dedicated GPU. For those, good/great quality PSU would be the option. But mediocre quality PSU is good enough for office build without dedicated GPU.

So, plop out your GPU and look how things are. If build boots up with an image, great, you have found your issue: your GPU is toast.
If no dice, then one of the following or all of them are dead: CPU, MoBo, RAM, PSU.
 
Remove the GPU from the system, plug monitor to MoBo and look if you can get an image.


Just because PSU is new, doesn't mean it is good. CM MWE V3 is mediocre quality PSU (e.g on-par to Corsair RMe), and it may be enough. Though, personally, i wouldn't run mediocre quality PSU in any build that has dedicated GPU. For those, good/great quality PSU would be the option. But mediocre quality PSU is good enough for office build without dedicated GPU.

So, plop out your GPU and look how things are. If build boots up with an image, great, you have found your issue: your GPU is toast.
If no dice, then one of the following or all of them are dead: CPU, MoBo, RAM, PSU.
My PSU is a cooler master MWE good 850v3. I'd say that's pretty good to say the least. I also know it's working fine because I used a PSU tester. Which is how I knew my last one was no good as I said in my post.
 
My PSU is a cooler master MWE good 850v3. I'd say that's pretty good to say the least. I also know it's working fine because I used a PSU tester. Which is how I knew my last one was no good as I said in my post.
A PSU tester only tests whether or not the PSU will turn on. It says nothing for working while underload, ripple, noise, working under high heat, whether or not the laundry list of protections work, et cetera.
 
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My PSU is a cooler master MWE good 850v3. I'd say that's pretty good to say the least.
For 2nd opinion about your PSU, look it up from PSU tier list,
link: https://docs.google.com/spreadsheet...JWkc/edit?pli=1&gid=1973454078#gid=1973454078

If you have non-modular unit, then it is Tier B. If modular unit then Tier B+.
"Pretty good" is Tier A+, which your PSU is not.

I also know it's working fine because I used a PSU tester. Which is how I knew my last one was no good as I said in my post.
As said above by helper800, PSU tester only tests if PSU turns on and that's it.

It's like you turning on the car engine and when engine starts, you instantly assume that the car drives just fine, without ever doing the test drive (feel how car handles, test brakes, hear if engine sounds normal etc.).

So, no. Just turning on the PSU, without putting any load to it, doesn't mean PSU works fine.
 
For 2nd opinion about your PSU, look it up from PSU tier list,
link: https://docs.google.com/spreadsheet...JWkc/edit?pli=1&gid=1973454078#gid=1973454078

If you have non-modular unit, then it is Tier B. If modular unit then Tier B+.
"Pretty good" is Tier A+, which your PSU is not.


As said above by helper800, PSU tester only tests if PSU turns on and that's it.

It's like you turning on the car engine and when engine starts, you instantly assume that the car drives just fine, without ever doing the test drive (feel how car handles, test brakes, hear if engine sounds normal etc.).

So, no. Just turning on the PSU, without putting any load to it, doesn't mean PSU works fine.
I understand. I did what was recommended, removing the GPU. There was no difference in performance.
 
There was no difference in performance.
Performance? I thought you had trouble keeping the PC powered on, rather than having FPS issues or lack of CPU compute power.

But i digress.

As i said earlier;
So, plop out your GPU and look how things are. If build boots up with an image, great, you have found your issue: your GPU is toast.
If no dice, then one of the following or all of them are dead: CPU, MoBo, RAM, PSU.
With this, you need 2nd, compatible build, to test out each component individually.
Or for easiest fix, haul your PC to PC repair shop and pay for diagnostics.

MoBo would be the main suspect since out of the 4 (CPU, MoBo, RAM and PSU), MoBo would be 1st to go when PSU acts up. Followed by GPU. CPU and RAM are more durable but not invulnerable either.

At this point, it is difficult to tell what the exact cause for hardware failure was.
When you got the new CPU-MoBo combo, did you try to power it on with the old PSU 1st? And once you saw it didn't work, then you got yourself a new PSU?
Or did you use only new PSU with new CPU-MoBo combo?