PC Randomly reboots without any warning, error or blue-screen

[Darthiss]

EDIT APRIL 5^TH 2022: So, last week, I've decided to disassemble my entire setup, disconnecting all cables and even re-installing my CPU. I did that, and left my pc without the backside panel, as I thought the cleaning would be in vain and I would have to reinstall a new PSU soon.

Somehow it's been almost 5 days without any reboots. I don't know what happened, but the old and reliable re-assembly seems to have fixed it. I'll keep you posted if the PC reboots again.

One of my main theories is that some kind of short circuit was produced by the SATA cables on the back touching the back of the motherboard accidentally when the backside pannel was on. 

Other theories include:

- PSU reheating due to dust on its fan.
- Some cable that got a bad connection?
- Dust in some connection making problems?
 

--------------------------------------

System

CPU: Ryzen 5 1600
GPU: Asus Strix GTX 1080 (ROG-STRIX-GTX1080-A8G-GAMING)

RAM: VENGEANCE LPX 16GB (2x8GB) DRAM DDR4 2400mhz Corsair
Motherboard: Gigabyte GA-AB350-Gaming 3 BIOS: F52e
PSU: Thermaltake Smart 650w 80 Plus Bronze (SP-650P)
SSD: WD Green SATA SSD M.2 240GB (Good - 57% health reported by CrystalDisk) (Here is Windows installed)

SSD: KINGSTON SATA SSD 480gb (Good - 100% health reported by CrystalDisk)

HDD: WD Blue 1TB 7200rpm (Good - reported by CrystalDisk)
HDD: Seagate Barracuda 2TB 7200rpm (Good - reported by CrystalDisk)

OS: WINDOWS 10 x64  - build 19044
Others: Gaming Keyboard, Innalambric mouse, Presonus Audio interface, xbox controllers, several usb, etc.

 

Note: The oldest component is the PSU, with 7 years of using. 

----

 

Hello, lovely community,
I hope you are doing great.
 

As the title mentions, a few months ago my pc started rebooting randomly, without warnings or error messages. It doesn't shutdown, 
 

It happens mostly when doing not demanding activities like working on Excel, listening to Spotify or just watching some Youtube videos.

I think it happened once while gaming, but I'm not so sure.
 

What did I try:

• Changing both Memory sticks to the other 2 slots
• Reinstalling Windows 
• Updating Windows, BIOS, Drivers, etc
• Disconnecting the reboot button on the chassis
• Disconnecting the last SSD I bought (the Kingston one)
• Checking temps, they are more than fine.

I don't know what else to try, and I wanted to know if there was anything else to do before going and buy a new PSU.

Any ideas?
 

Thanks so much!

 

Edited April 5, 2022 by Darthiss
Added updates after cleaning and re-assembly

[191x7]

Try stress testing it like running Prime95 SmallFTT + Unigine Heaven or FurMark. If it shutdowns, you'll know it's the PSU or the temperatures.

 

Disconencted the reset button, but how about the power button?

[Darthiss]

3 minutes ago, 191x7 said:

Try stress testing it like running Prime95 SmallFTT + Unigine Heaven or FurMark. If it shutdowns, you'll know it's the PSU or the temperatures.

 

Disconencted the reset button, but how about the power button?

I'll do the stress testing. Should I do both at the same time, no? 
I'll try the power button as well. 

[191x7]

1 minute ago, Darthiss said:

I'll do the stress testing. Should I do both at the same time, no? 
I'll try the power button as well. 

Both at the same time is a PSU test while also a CPU and GPU test.

 

What worries me, is the low health of your OS drive. What does Hard Disk Sentinel say about it?

[OddOod]

So when you boot up there are no Critical or Error events in Event Viewer?

[Darthiss]

33 minutes ago, 191x7 said:

Both at the same time is a PSU test while also a CPU and GPU test.

 

What worries me, is the low health of your OS drive. What does Hard Disk Sentinel say about it?

Hi, I've just run both tests for half an hour. No restarts or temp issues.

Here are some HWMonitor screenshots after the stress test (it recorded data during the stress test) and capture of HD Sentinel.

[Darthiss]

3 minutes ago, OddOod said:

So when you boot up there are no Critical or Error events in Event Viewer?

Hi there. I dont really know how and what to look for in the event viewer. PC rebooted at 10:44/45ish

 

 

 

 

 

 

[--SID--]

1 hour ago, Darthiss said:

The oldest component is the PSU, with 7 years of using

And it was bad when it was new. Replace it anyway.

[Darthiss]

Just now, --SID-- said:

And it was bad when it was new. Replace it anyway.

hahaha, any recommendations on brands and power for my system?

[191x7]

Those 95°C on the CPU would worry me a bit. But it shouldn't be the cause for the restart.

 

What does the Windows Realiablity Monitor tool say?

[--SID--]

1 minute ago, Darthiss said:

hahaha, any recommendations on brands and power for my system?

Enough, but which one depends on the availability in your region. Do you have a link to a webshop?

[Darthiss]

5 minutes ago, 191x7 said:

Those 95°C on the CPU would worry me a bit. But it shouldn't be the cause for the restart.

 

What does the Windows Realiablity Monitor tool say?

I'm on the stock cooler, and the PC never gets to 100% on both gpu and cpu at the same time, so I don't worry too much about the 95°C. I mean it's hot, but in reality I dont achieve that kind of temps.

 

Emm, here you go. I remember both reboots marked in red (yesterday and today)

 

 

[Darthiss]

18 minutes ago, --SID-- said:

Enough, but which one depends on the availability in your region. Do you have a link to a webshop?

Sure, https://www.fullh4rd.com.ar/cat/211/fuentes-certificadas/1 // https://compragamer.com/index.php?seccion=3&cate=34

Its in spanish because I'm from Argentina. Here you can easily get brands like: Gigabyte, Cooler Master, Thermaltake, Corsair, EVGA, almost none BeQuiet!

I didn't knew but there are some Seasonic models available as well, like this one: https://www.fullh4rd.com.ar/prod/16883/fuente-650w-seasonic-core-gm-650-80-plus-gold

[--SID--]

24 minutes ago, Darthiss said:

Sure, https://www.fullh4rd.com.ar/cat/211/fuentes-certificadas/1 // https://compragamer.com/index.php?seccion=3&cate=34

Its in spanish because I'm from Argentina. Here you can easily get brands like: Gigabyte, Cooler Master, Thermaltake, Corsair, EVGA, almost none BeQuiet!
 

https://www.fullh4rd.com.ar/prod/18064/fuente-550w-80-plus-bronze-corsair-cx550

https://www.fullh4rd.com.ar/prod/19994/fuente-550w-corsair-cx550f-full-modular-80-plus-bronce-blanc

 

[OddOod]

3 hours ago, Darthiss said:

hahaha, any recommendations on brands and power for my system?

seasonic focus gold plus 850 will be enough PSU for the entire 7 year warranty

 

 

Also, you need to repaste your CPU, the TIM is completely dried out. 

[Darthiss]

1 minute ago, OddOod said:

seasonic focus gold plus 850 will be enough PSU for the entire 7 year warranty

Do I really need that much wattage? 

[OddOod]

41 minutes ago, Darthiss said:

Do I really need that much wattage? 

The marginal cost for wattage (at least in the US) isn't high. Like, a good 500W might run 100USD, but an 850 is 130USD. If you're already going to buy quality, the extra quantity hurts very little. 
Also, the rumblings are that NV's 4000 series are gonna take another significant hike in power draw

 

 

[Darthiss]

22 minutes ago, OddOod said:

The marginal cost for wattage (at least in the US) isn't high. Like, a good 500W might run 100USD, but an 850 is 130USD. If you're already going to buy quality, the extra quantity hurts very little. 
Also, the rumblings are that NV's 4000 series are gonna take another significant hike in power draw

Alright I get it, yeah, here in Argentina it's a bit more expensive.What's the min. for my current system, 550w?

I have a friend telling me that maybe the problems are the Motherboard VRMS, and not the PSU. He might have a spare PSU to try his theory. I'll keep you posted.

Here a B450 mother is around the same of a 650w psu, but I'd like to spend the money just once hahaha

[OddOod]

5 hours ago, Darthiss said:

.What's the min. for my current system, 550w?

Your system currently pulls 275W. the absolute minimum I'd say is a 400W PSU, which might last 18 months. But the more headroom you pay for, the longer it will last. 
I'd recommend picking a price you are willing to pay, then find something that is tier B or better at that price and buy that. 

 

 

[Darthiss]

17 hours ago, OddOod said:

 

 

20 hours ago, --SID-- said:

 

 

21 hours ago, 191x7 said:

 

 

Guys! Something REALLY weird happened. I was checking the system info on HWiNFO and the BIOS rolled back to F31, and I-ve updated it to F52e a few days ago. Could it be that the reboots are somehow linked to the BIOS rolling back to an older version?

[191x7]

11 minutes ago, Darthiss said:

 

 

 

Guys! Something REALLY weird happened. I was checking the system info on HWiNFO and the BIOS rolled back to F31, and I-ve updated it to F52e a few days ago. Could it be that the reboots are somehow linked to the BIOS rolling back to an older version?

Dual Bios board?

If it is a (software switch) dual bios board, when updating one BIOS you also have to update the second one. Otherwise there might be clonflicts.

 

Also, Gigabyte employs staged upgrades, so you can't just flash the latest, some require older bios versions to be flashed first.

[Darthiss]

8 minutes ago, 191x7 said:

Dual Bios board?

If it is a (software switch) dual bios board, when updating one BIOS you also have to update the second one. Otherwise there might be clonflicts.

 

Also, Gigabyte employs staged upgrades, so you can't just flash the latest, some require older bios versions to be flashed first.

Alright didn't knew that. Yes, I did the staged upgrades last time. I'll see how to update the backup bios as well. 

[191x7]

1 hour ago, Darthiss said:

Alright didn't knew that. Yes, I did the staged upgrades last time. I'll see how to update the backup bios as well. 

The last Gigabyte board I had (X470 Ultra Gaming) required me to use @bios to update the Bioses, first the main bios and the second one after that.