I got a brand new computer last month and for rendering images in cycles it’s good.
Today I tried rendering an animation and after like 2 or 3 frames my computer just reboots, Resulting in the .blend file also getting corrupted in the process.
my specs:
mothherboard B760M GAMING DDR4
cpu 13th Gen Intel(R) Core™ i7-13700F, 2100 Mhz, 16 procesadores principales, 24 procesadores lógicos
ram 32 gb
gpu nvidia gtx4060 8gb
Intel’s cpu 13th 14th has stability issues.
That issue may be part of this issue.
If the blender can’t handle it, only the blender will shut down.
If the system reboots, suspect a hardware problem.
Even in this case, file corruption is extremely rare.
(Commonly seen when there is a problem with the storage device)
※ Find and recover the damaged files in the temporary storage folder.
If the period is old, it will be deleted.
Welcome 
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Usually when a computer resets when doing some heavy work this means: too weak powersupply or some not properly connected power connectors for the graphic card.
If you have tnot build the computer yourself:
Talk to your seller.
Otherwise check the power capacity of your powersupply and the needs for the 4000er and all connectors and do not forget to plug the power cord before doing so.
In addition, it could also be a bad RAM stick which only shows when using all the RAM available. For that you can run a memtest, which is built-in in Windows start options or DL one from the web.
But like other people said, it sounds like a hardware issue somewhere.
yeah everytime i render the animation it just blackscreen and reboots corrupting the file. I know how to get a backup luckily but still. Everything is brand new and I built it with my brother who’s an it guy.
Time for some hardware checking then. Recheck all cables, see if all parts are slotted properly and check if all parts are compatible. Especially with RAM, mobo and CPU you have a recommendations list form the mobo manufacturer. But these things are often hard to diagnose.
Also see if you can find a so called stresstest application online and run that, it will quickly show where the problem lies.
Good luck!
The CPU issue can also be resolved with a BIOS update.
Check out the mainboard company’s website.
Update everything possible (bios, chipsets, etc.)
Or, as someone else mentioned above, it could be a power shortage.
Add…
HWiNFO (free) allows you to monitor power and hardware usage.
Monitor the power stability, the amount of power used by the main board, CPU, GPU, and temperature
Free Download HWiNFO Sofware | Installer & Portable for Windows, DOS
did RAM diagnostic, everything is fine with 'em.
To rule out weird software/ hardware combos, can you try the cinema4d ‘Cinebench’ rendertest app? You can DL it from the MS Store.
If that one works, its something strange in Blender that causes your PC to crash. Although it’s rare that way.
ran stresstest with OCCT, and did the cinema4d cinebench and none of em made my pc shut down.
I’m starting to think may be my power supply lol. I’ve had it for 10 years so maybe its not giving enough W anymore.
What is the output of the power supply? 
If you search the web, there is a calculator that can calculate how much power the parts used in your PC use.
There is a power drop in the old power supply, but if it is a power supply with enough power for the parts you are using, it will not suddenly go down.
Apart from identifying the cause of the problem, a 10-year-old power supply seems to need to be replaced.
CPUs and GPUs consume high power and require stable power supply.
i forgot how much but pretty sure its around 650W
Calculate the amount of power used directly.
Roughly 560w. (A lot missing)
https://www.msi.com/power-supply-calculator
add…
If the voltage of the power supply is an approximation of the required voltage of the part used, it will be okay if it is dangerous and has room.
I don’t think the old power supply necessarily needs to be replaced.
There is a difference in durability of parts between PCs that work on simple documents for a long time and PCs that play high-performance games.
If there is a sharp drop in output from the power supply, I think the life of the part has expired.
This is not usually verifiable and requires measuring equipment.
However, because there is a risk of damage to the parts, we recommend replacing the long-used power supply.
However, we don’t know if this is the root cause of this problem.
If the RAM test was OK, and Cinebench didn’t crash your PC, one could argue it’s blender.
Also, Cinebench really hits your PC hard, so any PSU issues would also show up here. Although 650W is on the low side imho.
Is there any way that you can test a similar, or the same scene, in Blender 4.2 LTS? If it renders there without issues, there’s a nasty bug in 4.3.
my pc rarely shuts down when rendering images. Like ever, only last night it turned off on its own during the denoising phase. (I use blender 4.2)
It crashes 100% when i render animations.
What happens if you turn denoising off? First for the GPU, then totally.
If the crash happens during that phase, maybe it’s interesting to see if that solves it…
It could still be a PSU issue. My thinking, especially with such an old PSU and why it happens with animation, is that between each frame rendering, the power draw can go up and down by a large amount for each frame.
Especially as it jumps between CPU usage to prepare the frame and then full GPU usage to render the frame.
Hence, there’s a chance that the CPU gets a sudden voltage drop, maybe partly due to the GPU suddenly pulling a lot of power the moment the CPU is down (and the old PSU is pushing the power to the GPU and takes a little too much away from the CPU for a second).
One thing to maybe try, in addition to making sure you are running the very latest BIOS, is checking/looking for a BIOS setting that ups the base idle voltage to the CPU. My thinking is that it suddenly drops just a little too low and causes the reboot.
One way to partly test this, is with Blender, do the animation render just using the CPU. I suspect that will be fine, since the CPU will then never get a big power drop, as its working the whole time. Don’t use denoising for that test or not GPU denoising at least.
pc barely turns off for denoising phases.
as for the animation i’ve been trying to render it’s just a test animation in benchmark rende,r tried eeven but same thing, it crashes. I think I know the cause, I THINK
Di you find the cause of the crashes?
If so, please add it to this thread for others to find 