Question Pc keeps crashing - black screen, red cpu light on

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caulfield521

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Oct 25, 2019
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Hey everyone. So I recently upgraded my cpu from a Ryzen 5 3600 to a Ryzen 9 5900x, as I use my pc predominantly for music production, and big projects were becoming very cpu intensive. The 5900x has been fine for basic tasks, but when working on specific demanding projects, the computer crashes - The screen goes black but the fans and aio radiator still function, and the cpu light on my motherboard is red, which according to the manual, “indicates cpu is not detected or fail.” When this occurs, the pc goes idle and the power off button is non-responsive. I can only power off via the power supply unit. Now, I'm not entirely sure what the culprit is here. I upgraded my psu to an 850w and the issue still persists. My motherboard is a bit dated and might need an upgrade, but I'm not sure. I’m running the latest bios and drivers for all the parts and am using a Corsair iCue Link H100i LCD aio which keeps the cpu temps at roughly 60-70c degrees under pressure. Bit of a pain because I don’t have any spare parts to properly troubleshoot, so was hoping you guys could help or offer some advice. Thanks.

Current specs:
. AMD Ryzen 9 5900X 3.7 GHz 12-Core Processor
. MSI B450 GAMING PRO CARBON AC ATX AM4 Motherboard
. Corsair Vengeance RGB Pro 32 GB (2 x 16 GB) DDR4-3600 CL18 Memory
. Samsung 970 Evo Plus 2 TB M.2-2280 PCIe 3.0 X4 NVME Solid State Drive
. Sapphire NITRO+ Radeon RX 6700 XT 12 GB Video Card
. Corsair RM850x Shift 850 W 80+ Gold Certified Fully Modular Side Interface ATX Power Supply
 
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The VRM on that mobo is probably not really sufficient for that CPU, in particular for the heat they have to be pouring off. The AIO doesn't downdraft air to the mobo and VRM area. Without knowing a bit more about your cooling and fan setup it would likely be a good idea to position a fan in a temporary way, perhaps just open the side of the case and point a "house fan" at that section of the motherboard and see if you get stability.

HWI might tell you some things about temp sensors on the mobo as well, however I have had real hit or miss experiences with that software on AMD.
 
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punkncat said:
The VRM on that mobo is probably not really sufficient for that CPU, in particular for the heat they have to be pouring off. The AIO doesn't downdraft air to the mobo and VRM area. Without knowing a bit more about your cooling and fan setup it would likely be a good idea to position a fan in a temporary way, perhaps just open the side of the case and point a "house fan" at that section of the motherboard and see if you get stability.

HWI might tell you some things about temp sensors on the mobo as well, however I have had real hit or miss experiences with that software on AMD.
Click to expand...
Interesting. My case is pretty much open at the moment anyway (all panels off) as I try to figure out the issue but I am using a Corsair 4000x. In terms of fans, there are three included SP120 Elites at the front, an AF120 Elite at the back, and the aio radiator fitted with two QX120.

I did make a HWI log of my pc leading up to a crash, but according to someone i sent it to, there was no clear indicator of the issue and it was probably the psu (as everything failed together) but unfortunately that wasn’t the issue.
 
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Lutfij said:
MSI B450 GAMING PRO CARBON AC ATX AM4 Motherboard
+
I’m running the latest bios
What BIOS version are you on for your motherboard?

Corsair RM850x Shift 850 W 80+ Gold Certified Fully Modular Side Interface ATX Power Supply
How old is the PSU?

Perhaps give this reddit a read.
Click to expand...
I’m running the latest bios version 7B85v1H4(Beta version).

And the psu is brand new. I upgraded from an old Corsair 650W because I thought maybe the cpu wasn’t receiving enough power.

Thank you for linking the reddit thread. A lot of replies saying disabling the PBO has worked but I still would like potential future overclocking capabilities, so a new motherboard might be the best bet.
 
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That motherboard should be sufficient for the 5900x. paired with the 850W PSU, i don't think power is your problem.
This seems to be a temperature issue or a hardware issue. In the ICUE program (used to control your AIO), you should be able to see individual thread temperatures for your CPU. Are they all around the same temperature moments prior to the crash? I would start there.
Also, I'm assuming you re-used your AIO from your previous setup... Did you re-apply the correct amount of thermal paste?
 
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samuel13098 said:
That motherboard should be sufficient for the 5900x. paired with the 850W PSU, i don't think power is your problem.
This seems to be a temperature issue or a hardware issue. In the ICUE program (used to control your AIO), you should be able to see individual thread temperatures for your CPU. Are they all around the same temperature moments prior to the crash? I would start there.
Also, I'm assuming you re-used your AIO from your previous setup... Did you re-apply the correct amount of thermal paste?
Click to expand...
I’m unable to see temps for individual threads in iCUE, but the cpu was sitting at 62 degrees when it crashed just now as I booted up a demanding program.

As for the 5900x and AIO, they are both brand new. I bought them together as I needed something better than my old stock wraith stealth cooler. I did leave the factory applied thermal paste on the AIO but I don’t imagine that would cause this much of an issue.
 
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caulfield521 said:
Interesting. My case is pretty much open at the moment anyway (all panels off) as I try to figure out the issue but I am using a Corsair 4000x. In terms of fans, there are three included SP120 Elites at the front, an AF120 Elite at the back, and the aio radiator fitted with two QX120.

I did make a HWI log of my pc leading up to a crash, but according to someone i sent it to, there was no clear indicator of the issue and it was probably the psu (as everything failed together) but unfortunately that wasn’t the issue.
Click to expand...
Follow the advice to use an external fan as a troubleshooting tool
 
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caulfield521 said:
Interesting. My case is pretty much open at the moment anyway (all panels off) as I try to figure out the issue but I am using a Corsair 4000x. In terms of fans, there are three included SP120 Elites at the front, an AF120 Elite at the back, and the aio radiator fitted with two QX120.
Click to expand...


Not "open to the air" but forced cool air blowing over the VRM and heatsinks.
 
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punkncat said:
Not "open to the air" but forced cool air blowing over the VRM and heatsinks.
Click to expand...
Apologies. I just tried putting a house fan beside the open case, blowing air directly on the cpu. Although the pc still did crash, i feel like it persevered a little longer than usual. Would you argue that maybe the VRM just isn’t cutting it for this cpu?
 
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Yeah,
Event 41 and 172 - Kernel Power
Event 55 - Kernel-Processor-Power
Event 6008 - Eventlog
Event 7000 - Service Control Manager, which says AmdRyzenMasterDriverV29 failed to start because it cannot find the file specified. Not sure if that’s because of the crash or something to look into.

Reliability history shows a number of “windows was not properly shut down” under critical events, but nothing else that pinpoints the problem.
 
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