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Repeated BSOD errors on power up.  

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Mchad65
(@mchad65)
Eminent Member
Repeated BSOD errors on power up.

I’m teetering on “buyers remorse” with my 2 week old C1. Coming from a Mk3S for a few years, which I upgraded to a 4s last month, which performed flawlessly in any and all circumstances, I bought a C1 from Amazon (via Printed Solid, Prusa’s US distributor) two weeks ago. Day one, it prompted me for a firmware update, and since then I’ve gotten about 6 BSOD Unknown Error” crashes on startup. 4 years with my other Prusa’s and never once. 

Prusa support was less than helpful, saying they needed to see the error. Fortunately (or sadly, not sure which) it just happened again. So back on the 30 min queue I go. 

I’m a little frustrated with this, yes, it works after a restart, but it shouldn’t be happening, esp. on a 2 week old factory built unit. 

Anyone else dealing with this?

Posted : 05/12/2025 1:59 am
FoxRun3D
(@foxrun3d)
Illustrious Member
RE: Repeated BSOD errors on power up.

Yes, I've seen it too. There's an open issue on GitHub. Apparently a bug introduced in the latest firmware. 

Formerly known on this forum as @fuchsr -- https://foxrun3d.com/

Posted : 05/12/2025 3:11 am
hyiger
(@hyiger)
Noble Member
RE: Repeated BSOD errors on power up.

It's a bug introduced in the 2.5.0 boot loader. It's been reported in the github repo and is actively being looked at by Prusa. There are at least 3 open issues. Prusa support won't know what to do with it since they are expecting an error code and there is none. Just ignore it an move on. If they can find a cause it will get corrected in the next firmware/bootloader update. 

Posted : 05/12/2025 3:25 am
hyiger
(@hyiger)
Noble Member
RE: Repeated BSOD errors on power up.

 

Posted by: @mchad65

I’m a little frustrated with this, yes, it works after a restart, but it shouldn’t be happening, esp. on a 2 week old factory built unit. 

Anyone else dealing with this?

It's a bootloader bug and not a firmware bug. It can be safely ignored. 

Posted : 05/12/2025 3:34 am
Geoff Steele
(@geoff-steele)
Trusted Member
RE: Repeated BSOD errors on power up.

I have seen it a couple of times, and it hasn't recurred after pressing reset yet. Frustrating I agree, but a niggle more than a dealbreaker for me.

Posted : 05/12/2025 3:37 am
robertK66
(@robertk66)
Member
RE:

Could you pls. add an link to this issue here? ( Was not able to find it 🙁 )

Ahh I found it: https://github.com/prusa3d/Prusa-Firmware-Buddy/issues/4805  

This post was modified 1 week ago by robertK66
Posted : 19/12/2025 8:28 am
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