F5F Stay Refreshed Hardware Desktop The computer has shut down and shows no signs of life.

The computer has shut down and shows no signs of life.

The computer has shut down and shows no signs of life.

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poppycock102
Junior Member
19
11-01-2022, 07:57 AM
#1
Hi. I constructed this system six months ago and it has remained fully functional without any issues such as lag, stuttering, artifacts, or overheating until recently. While running a random old game (Mechwarrior 5), it suddenly shut down abruptly. There were no prior signs of audio, visual problems, slowdowns, etc. When I attempt to restart it, it doesn’t even boot up properly—only the fans and RAM indicators light up, while the CPU EZ DEBUG LED turns red. Peripherals like the USB keyboard LEDs also fail to activate.

Specifications:
MSI MAG Z790 Tomahawk WIFI (DDR5)
i9-13900KF
RTX 4090 (MSI brand)
GSkill Trident Z5 RGB 2x32GB
MSI A1000G PCIE5 1000W (Power Supply)
Noctua NH-U12A
Seagate FireCuda 530 2TB.
No overclocking.

Initially, I considered the power supply as the culprit, but after testing all power rails with a multimeter while the system was powered on, everything seemed stable—voltage readings were consistent and within expected ranges. I also verified the 3.3V/5V/-12V/5VsB/PWRON rails, confirming they were present and operating correctly. All fans are functioning properly (heatsink, case fans, GPU fans).

However, a few months ago there was an unusual event that led me to suspect the PSU again. During a nighttime update, it rebooted but failed to restart successfully. When I powered it off and turned it back on, it didn’t boot at all—except the VGA light remained active. I eventually turned it off for some time and came back to find it working normally.

I’m not very experienced, so I really hope someone can help me diagnose and fix this issue. I’ve never handled an RMA before, but it seems a component here might need replacement.
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poppycock102
11-01-2022, 07:57 AM #1

Hi. I constructed this system six months ago and it has remained fully functional without any issues such as lag, stuttering, artifacts, or overheating until recently. While running a random old game (Mechwarrior 5), it suddenly shut down abruptly. There were no prior signs of audio, visual problems, slowdowns, etc. When I attempt to restart it, it doesn’t even boot up properly—only the fans and RAM indicators light up, while the CPU EZ DEBUG LED turns red. Peripherals like the USB keyboard LEDs also fail to activate.

Specifications:
MSI MAG Z790 Tomahawk WIFI (DDR5)
i9-13900KF
RTX 4090 (MSI brand)
GSkill Trident Z5 RGB 2x32GB
MSI A1000G PCIE5 1000W (Power Supply)
Noctua NH-U12A
Seagate FireCuda 530 2TB.
No overclocking.

Initially, I considered the power supply as the culprit, but after testing all power rails with a multimeter while the system was powered on, everything seemed stable—voltage readings were consistent and within expected ranges. I also verified the 3.3V/5V/-12V/5VsB/PWRON rails, confirming they were present and operating correctly. All fans are functioning properly (heatsink, case fans, GPU fans).

However, a few months ago there was an unusual event that led me to suspect the PSU again. During a nighttime update, it rebooted but failed to restart successfully. When I powered it off and turned it back on, it didn’t boot at all—except the VGA light remained active. I eventually turned it off for some time and came back to find it working normally.

I’m not very experienced, so I really hope someone can help me diagnose and fix this issue. I’ve never handled an RMA before, but it seems a component here might need replacement.

R
Reavv
Junior Member
18
11-01-2022, 08:30 AM
#2
I purchased an MSI A1000G PCIE5 1000W in March, but it stopped working a few days ago. It suddenly turned off and won’t power on. I’ve tried checking the computer, reseating the RAM, using one stick, and even performed a paperclip test.
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Reavv
11-01-2022, 08:30 AM #2

I purchased an MSI A1000G PCIE5 1000W in March, but it stopped working a few days ago. It suddenly turned off and won’t power on. I’ve tried checking the computer, reseating the RAM, using one stick, and even performed a paperclip test.

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SpiritClaws
Member
217
11-01-2022, 09:32 AM
#3
I've seen some concerning reviews about that PSU failure, and it seems many users have experienced issues. How can I confirm whether the PSU is truly defective, even though the voltage readings on my meter look correct? Should I start by replacing it and returning it if it doesn't resolve the problem? I'm really unsure what to do next.
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SpiritClaws
11-01-2022, 09:32 AM #3

I've seen some concerning reviews about that PSU failure, and it seems many users have experienced issues. How can I confirm whether the PSU is truly defective, even though the voltage readings on my meter look correct? Should I start by replacing it and returning it if it doesn't resolve the problem? I'm really unsure what to do next.

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VickiRainbow
Member
69
11-08-2022, 08:45 PM
#4
It's not a great power supply. Troubleshooting is tough without a proper one.
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VickiRainbow
11-08-2022, 08:45 PM #4

It's not a great power supply. Troubleshooting is tough without a proper one.

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XxGrenidierXx
Posting Freak
813
11-09-2022, 04:06 AM
#5
Yeah, I think the PSU is the issue. I encountered an unstable 850-watt PSU from MSI that one of my customers purchased. It had a really shaky 5V rail. I filed a return and it was so bad that the PSU would work initially but then random components would fail or the system would crash. I’d blame the PSU here. Avoid MSI, get a reputable brand—you’ll need to invest a bit more, but a good 4090 unit should be reliable enough. Good luck!
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XxGrenidierXx
11-09-2022, 04:06 AM #5

Yeah, I think the PSU is the issue. I encountered an unstable 850-watt PSU from MSI that one of my customers purchased. It had a really shaky 5V rail. I filed a return and it was so bad that the PSU would work initially but then random components would fail or the system would crash. I’d blame the PSU here. Avoid MSI, get a reputable brand—you’ll need to invest a bit more, but a good 4090 unit should be reliable enough. Good luck!

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Bambook
Member
165
11-15-2022, 06:00 AM
#6
Hello Guys, I recently purchased and installed an HX1000i, but I'm facing the same issue again. Would it be worth trying to replace the motherboard?
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Bambook
11-15-2022, 06:00 AM #6

Hello Guys, I recently purchased and installed an HX1000i, but I'm facing the same issue again. Would it be worth trying to replace the motherboard?

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DestroyerGL
Junior Member
37
11-15-2022, 07:09 AM
#7
I've changed the MOBO to one with Q-Codes, and it's displaying Q-Code 00 on a ROG Strix Z790-E. I'm completely confused.
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DestroyerGL
11-15-2022, 07:09 AM #7

I've changed the MOBO to one with Q-Codes, and it's displaying Q-Code 00 on a ROG Strix Z790-E. I'm completely confused.

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ratelslang3
Member
167
11-15-2022, 08:21 AM
#8
Just in case anyone wants to know, it turned out the issue was with the CPU—it was completely dead. I had to ask a nearby tech store for help figuring it out. Since then, I've swapped the CPU and motherboard for an AMD setup. It was quite a costly repair overall :|
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ratelslang3
11-15-2022, 08:21 AM #8

Just in case anyone wants to know, it turned out the issue was with the CPU—it was completely dead. I had to ask a nearby tech store for help figuring it out. Since then, I've swapped the CPU and motherboard for an AMD setup. It was quite a costly repair overall :|