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                  1. Support
                  2. Printer troubleshooting
                  3. Blue Screen of Death (BSOD) #31538 (CORE One) #35538 (CORE One L) #36538 (CORE One INDX) #26538 (MK4S) #13538 (MK4) #27538 (MK3.9S) #17538 (XL) #21538 (MK3.9) #28538 (MK3.5S) #23538 (MK3.5) #12538 (MINI)
                   

                  Contents

                  • BSOD vs BSOD (FW version 6.5.1 or higher)
                  • Sending files to the printer (USB Drive/Connect)
                  • MMU3
                  • Technical Support and Crash Dump

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                  Blue Screen of Death (BSOD)

                  #31538 (CORE One) #35538 (CORE One L) #36538 (CORE One INDX) #26538 (MK4S) #13538 (MK4) #27538 (MK3.9S) #17538 (XL) #21538 (MK3.9) #28538 (MK3.5S) #23538 (MK3.5) #12538 (MINI)

                  Relevant for

                  INDX family
                  CORE One family
                  MK4 family
                  XL family
                  MMU family
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                  Some processes in your Original Prusa Printer might generate a rare outcome, not included on our red QR code errors or warning screens, and thus give you an error with a blue or black screen and some code on it. 

                  This is commonly known as BSOD (Blue or Black Screen of Death). 

                  Error name: Internal Error

                  Error code: #31538 (CORE One) #35538 (CORE One L) #36538 (CORE One INDX) #26538 (MK4S) #13538 (MK4) #27538 (MK3.9S) #17538 (XL) #21538 (MK3.9) #28538 (MK3.5S) #23538 (MK3.5) #12538 (MINI)

                  BSOD vs BSOD (FW version 6.5.1 or higher)

                  Starting from firmware version 6.5.1, the “Blue Screen of Death” becomes the “Black Screen of Death”, still keeping the familiar BSOD acronym. 

                  Black Screen of DeathBlue Screen of Death

                  Sending files to the printer (USB Drive/Connect)

                  If the BSOD appears after trying to select a file from the USB, try using another USB drive, or format your drive to FAT32.

                  If the issue happens when sending a file from Connect, it should be a momentary issue that will go away on its own. If the issue persists, attempt a power cycle, by switching off the printer, and switching it on again. 

                  MMU3

                  The BSOD might appear after you install your MMU3, or try to flash its firmware. If this happens, switch the printer off, and disconnect the MMU cable(s) from the printer's main board. Check the xBuddy board and the MMU board for visible damage. 

                  Do not disconnect or reconnect any cables while the printer is switched on. 
                  In case no visible damage is found, reconnect the cables, and temporarily deactivate the MMU from the LCD Menu -> Settings. If the printer works with the MMU disabled, attempt enabling the MMU again and reflashing firmware. 

                  Technical Support and Crash Dump

                  Our technical support is available at any time. Do not hesitate to contact us to report the BSOD. 

                  If requested from our side, with a USB drive inserted into the printer, go into the printer menu to Settings -> System -> Save Crash Dump, and send it to [email protected] so we can check the best way to solve the problem. However, please note that this email address is not for our technical support. 

                  Please follow these guidelines when sending the crash dump. 

                  • Do not share crash dumps publicly, for security reasons. 
                  • Include the following information when sending the crash dump:
                    • Printer model and serial number.
                    • Although we expect the printer to be running the most recent firmware, include in the information the firmware version installed on the printer. 
                    • Description of the problem.
                    • Description of the last few steps before the BSOD occurred, or any steps to reproduce it. 
                    • Let us know if the printer is connected to the network (i.e. PrusaConnect, Octoprint, etc.)
                    • Let us know if there are third-party components installed on the printer (RPi boards, LED lights, cameras, Bondtech mods, UPS batteries, etc.)
                  • Additional information if applicable:
                    • Pictures and/or video of the issue. 
                    • Print files that may help to reproduce a problem in the middle of the print. 
                  Was this article helpful?
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                  Topics

                  • Troubleshooting
                    • Printer troubleshooting
                      • Spaghetti monster
                      • Extruder blob
                      • Clogged nozzle/hotend (MK3.5/S, MK3S+, MK2.5S)
                      • Extruder noises
                      • Print fan is not spinning
                      • Multimeter usage
                      • Firmware updating issues (MK2.5S/MK3S+/MMU2S/MMU3)
                      • IR filament sensor calibration (MMU3, MMU2S)
                      • Clogged nozzle/hotend (MINI/MINI+)
                      • Preheat error bed #12201 (MINI)
                      • M.I.N.D.A./SuperPINDA sensor testing (MINI/MINI+)
                      • Preheat error print head #12202 (MINI)
                      • Thermal runaway bed #12203 (MINI)
                      • Thermal runaway print head #12204 (MINI)
                      • Maxtemp error bed #12205 (MINI)
                      • Maxtemp error print head #12206 (MINI)
                      • Mintemp error bed #12207 (MINI)
                      • Mintemp error print head #12208 (MINI)
                      • Squaring your MINI
                      • Factory reset (MINI)
                      • Blown Fuse (MINI)
                      • IR Filament Sensor Troubleshooting (MINI/MINI+)
                      • Filament failed to unload (MINI/MINI+)
                      • Temp not matching print head #12210 (MINI/MINI+)
                      • PrusaLink Troubleshooting
                      • Homing Error #12301 (MINI)
                      • USB not connected #12602 (MINI/MINI+)
                      • No file on USB #12604 (MINI/MINI+)
                      • Signature verification failed #12606 (MINI/MINI+)
                      • Hash verification failed #12607 (MINI/MINI+)
                      • Unsupported printer type #12610 (MINI/MINI+)
                      • Unsupported printer version #12611 (MINI/MINI+)
                      • Flash erase error #12605 (MINI/MINI+)
                      • Temp not matching heatbed #12209 (MINI/MINI+)
                      • Homing error Z #17301 (XL)
                      • Modular bed error #17501 (XL)
                      • Dwarf error #17502 (XL)
                      • FINDA: Filament Stuck #04102 (MMU)
                      • Nozzle Cleaning Failed #17834 (XL)
                      • Extruder preheat error #17202 (XL)
                      • Extruder thermal runaway #17204 (XL)
                      • Extruder Mintemp error #17208 (XL)
                      • Extruder Maxtemp error #17206 (XL)
                      • No FW in internal flash #12612 (MINI/MINI+)
                      • Invalid FW size on USB #12603 (MINI/MINI+)
                      • File system error #12613 (MINI/MINI+)
                      • Unsupported BBF version #12614 (MINI/MINI+)
                      • Puppy error #17514 (XL)
                      • No FW on USB flash drive #17604 (XL)
                      • Unsupported printer model #17610 (XL)
                      • Unsupported Buddy FW #17611 (XL)
                      • USB flash error #17613 (XL)
                      • Invalid FW size on USB flash drive #17603 (XL)
                      • USB flash drive not connected #17602 (XL)
                      • Firmware missing #17612 (XL)
                      • FW in internal flash corrupted #17608 (XL)
                      • Hash verification failed #17607 (XL)
                      • Imposter! Fake signature #17606 (XL)
                      • Flash erase error #17605 (XL)
                      • Unsupported firmware BBF file #17614 (XL)
                      • Modular bed error #17250 (XL)
                      • Toolchanger error #17135 (XL) #36135 (CORE One INDX)
                      • Extruder temp not matching #17210 (XL)
                      • Modular bed error #17251 (XL)
                      • Modular bed error #17252 (XL)
                      • Modular bed error #17253 (XL)
                      • Modular bed error #17254 (XL)
                      • Modular bed error #17256 (XL)
                      • Modular bed error #17257 (XL)
                      • Modular bed error #17302 (XL)
                      • Modular bed error #17303 (XL)
                      • Dwarf error #17503 (XL)
                      • ESP error #17505 (XL)
                      • ESP error #17506 (XL)
                      • ESP error #17504 (XL)
                      • Emergency stop #17510 (XL)
                      • Puppy error #17511 (XL)
                      • Puppy error #17512 (XL)
                      • Puppy error #17513 (XL)
                      • Puppy error #17515 (XL)
                      • Puppy error #17516 (XL)
                      • Puppy error #17517 (XL)
                      • Puppy error #17518 (XL)
                      • Puppy error #17519 (XL)
                      • Puppy error #17520 (XL)
                      • Puppy error #17521 (XL)
                      • Puppy error #17522 (XL)
                      • Hotend preheat error #31202 (CORE One) #35202 (CORE One L) #26202 (MK4S) #13202 (MK4) #27202 (MK3.9S) #21202 (MK3.9) 
                      • Bed thermal runaway #31203 (CORE One) #35203 (CORE One L) #36203 (CORE One INDX) #26203 (MK4S) #13203 (MK4) #27203 (MK3.9S) #21203 (MK3.9) #28203 (MK3.5S) #23203 (MK3.5) 
                      • Hotend thermal runaway #31204 (CORE One) #35204 (CORE One L) #26204 (MK4S) #13204 (MK4) #27204 (MK3.9S) #21204 (MK3.9)
                      • Hotend mintemp error #31208 (CORE One) #35208 (CORE One L) #26208 (MK4S) #13208 (MK4) #27208 (MK3.9S) #21208 (MK3.9)
                      • Hotend maxtemp error #31206 (CORE One) #35206 (CORE One L) #26206 (MK4S) #13206 (MK4) #27206 (MK3.9S) #21206 (MK3.9) #28206 (MK3.5S) #23206 (MK3.5)
                      • Bed mintemp error #31207 (CORE One) #35207 (CORE One L) #36207 (CORE One INDX) #26207 (MK4S) #13207 (MK4) #27207 (MK3.9S) #21207 (MK3.9) #28207 (MK3.5S) #23207 (MK3.5)
                      • Bed maxtemp error #31205 (CORE One) #35205 (CORE One L) #36205 (CORE One INDX) #26205 (MK4S) #13205 (MK4) #27201 (MK3.9S) #21201 (MK3.9) #28201 (MK3.5S) #23201 (MK3.5)
                      • Selftest failed (XL single-tool)
                      • Filament not loading (XL)
                      • Clogged hotend (XL)
                      • Heatbreak Mintemp error #17211 (XL)
                      • Heatbreak Maxtemp error #17212 (XL)
                      • Homing error X #17304 (XL)
                      • Homing error Y #31305 (CORE One) #35305 (CORE One L) #36305 (CORE One INDX) #17305 (XL)
                      • USB Port Overcurrent #17306 (XL)
                      • USB Device Overcurrent #17307 (XL)
                      • I2C Send Failed #17311 (XL)
                      • I2C Send Busy #17312 (XL)
                      • I2C Send Timeout #17313 (XL)
                      • I2C Send Undefined #17314 (XL)
                      • I2C Receive failed #17315 (XL)
                      • EEPROM I2C Receive Busy #17316 (XL)
                      • I2C Receive Timeout #17317 (XL)
                      • I2C Receive undefined #17318 (XL)
                      • Modular Bed Error #17319 (XL)
                      • Out of memory #17507 (XL)
                      • PNG Buffer Full #17508 (XL)
                      • Loadcell not calibrated #17523 (XL)
                      • Loadcell tare error #17524 (XL)
                      • Loadcell tare failed #17525 (XL)
                      • Loadcell measure failed #17526 (XL)
                      • Loadcell Bad Configuration #17527 (XL)
                      • Loadcell timeout #17528 (XL)
                      • LED Memory Error #17529 (XL)
                      • Marlin Request Timeout #17530 (XL)
                      • BBF Allocation Failed #17531 (XL)
                      • BBF Initialization failed #17532 (XL)
                      • MMU Overcurrent #31310 (CORE One) #35310 (CORE One L) #26310 (MK4S) #13310 (MK4) #27310 (MK3.9S) #21310 (MK3.9) #28310 (MK3.5S) #23310 (MK3.5)
                      • I2C Send failed #31311 (CORE One) #35311 (CORE One L) #36311 (CORE One INDX) #26311 (MK4S) #13311 (MK4) #27311 (MK3.9S) #21311 (MK3.9) #28311 (MK3.5S) #23311 (MK3.5) #12311 (MINI/+)
                      • Loadcell Not Calibrated #31523 (CORE One) #35223 (CORE One L) #26523 (MK4S) #13523 (MK4) #27523 (MK3.9S) #21523 (MK3.9)
                      • Loadcell Tare Error #31524 (CORE One) #35524 (CORE One L) #26524 (MK4S) #13524 (MK4) #27524 (MK3.9S) #21524 (MK3.9)
                      • Loadcell Tare Failed #31525 (CORE One) #35525 (CORE One L) #26525 (MK4S) #13525 (MK4) #27525 (MK3.9S) #21525 (MK3.9)
                      • Loadcell Measure Failed #31526 (CORE One) #35526 (CORE One L) #36526 (CORE One INDX) #26526 (MK4S) #13526 (MK4) #27526 (MK3.9S) #21526 (MK3.9) #36526 (CORE One INDX)
                      • Loadcell Bad Configuration #31527 (CORE One) #35527 (CORE One L) #36527 (CORE One INDX) #26527 (MK4S) #13527 (MK4) #27527 (MK3.9S) #21527 (MK3.9)
                      • Loadcell Timeout #31528 (CORE One) #35528 (CORE One L) #26528 (MK4S) #36528 (CORE One INDX) #13528 (MK4) #27528 (MK3.9S) #21528 (MK3.9)
                      • Heatbreak MINTEMP Error #31211 (CORE One) #35211 (CORE One L) #26211 (MK4S) #13211 (MK4) #27211 (MK3.9S) #21211 (MK3.9)
                      • Heatbreak MAXTEMP Error #31212 (CORE One) #35212 (CORE One L) #26212 (MK4S) #13212 (MK4) #27212 (MK3.9S) #21212 (MK3.9) 
                      • Modular Bed Error #17320 (XL)
                      • Blown Fuse (MK4/S, MK3.9/S)
                      • Filament not loading (MK4/S, MK3.9/S)
                      • Homing error Y #26305 (MK4S) #13305 (MK4) #21305 (MK3.9) #23305 (MK3.5)
                      • Tangled filament
                      • Factory reset (CORE One L, CORE One, MK4/S, MK3.9/S, MK3.5/S, MINI/+, XL)
                      • Emergency stop #12510 (MINI)
                      • Nextruder filament sensor (CORE One, CORE One L, MK4/S, MK3.9/S, XL/+)
                      • XY probe unstable #17105 (XL)
                      • XY position invalid #17106 (XL)
                      • Pin not reached #17107 (XL)
                      • Dock position out of bounds #17103 (XL)
                      • Tool offset out of bounds #17104 (XL)
                      • ESP not connected #17533 (XL)
                      • Status LED explained (MMU3)
                      • Factory Reset (MMU)
                      • Connect Registration Failed
                      • Hotend maxtemp error #23206 (MK3.5)
                      • Connect Registration Failed #12401 (MINI)
                      • Connect Registration Failed #21401 (MK3.9)
                      • Connect Registration Failed #23401 (MK3.5)
                      • Connect Registration Failed #17401 (XL)
                      • Homing Error Z #23301 (MK3.5)
                      • Nozzle Heater Overcurrent #23308 (MK3.5)
                      • TMC driver shorted #04304 (MMU)
                      • TMC driver shorted #04314 (MMU)
                      • TMC driver shorted #04324 (MMU)
                      • Selftest failed (XL multi-tool)
                      • Blue Screen of Death (BSOD) #31538 (CORE One) #35538 (CORE One L) #36538 (CORE One INDX) #26538 (MK4S) #13538 (MK4) #27538 (MK3.9S) #17538 (XL) #21538 (MK3.9) #28538 (MK3.5S) #23538 (MK3.5) #12538 (MINI)
                      • Stuck filament detection #31101 (CORE One) #35101 (CORE One L) #26101 (MK4S) #13101 (MK4) #27101 (MK3.9S) #21101 (MK3.9) #17108 (XL)
                      • Hotend temp not matching #31210 (CORE One) #35210 (CORE One L) #26210 (MK4S) #13210 (MK4) #27210 (MK3.9S) #21210 (MK3.9)
                      • Hotend Heater Overcurrent #17322
                      • Heatbed temp not matching #17209 (XL)
                      • Homing error Y #12305 (MINI/MINI+)
                      • Homing error X #12304 (MINI/MINI+)
                      • Toolchanger problem #17813 (XL multi-tool)
                      • Under-extrusion (Nextruder printers)
                      • EXTRUDER ERROR #17536 (XL)
                      • Nozzle Timeout #31819 (CORE One) #35819 (CORE One L) #36819 (CORE One INDX) #26819 (MK4S) #13819 (MK4) #27819 (MK3.9S) #21819 (MK3.9) #28819 (MK3.5S) #23819 (MK3.5) #17819 (XL) #12819 (MINI)
                      • Uneven bed #31111 (CORE One) #35111 (CORE One L) #36111 (CORE One INDX)
                      • Filament sensor stuck #31113 (CORE One) #35113 (CORE One L) #36113 (CORE One INDX) #17113 (XL) #26113 (MK4S) #13113 (MK4) #27113 (MK3.9S) #21113 (MK3.9) #28113 (MK3.5S) #23113 (MK3.5) #12113 (MINI/+)
                      • Chamber MAXTEMP error #31214 (CORE One) #35214 (CORE One L) #36214 (CORE One INDX)
                      • Homing error X #31304 (CORE One) #35304 (CORE One L) #36304 (CORE One INDX) #17304 (XL)
                      • Puppy error #31511 (CORE One) #35511 (CORE One L) #36511 (CORE One INDX)
                      • Puppy error #31513 (CORE One) #35513 (CORE One L) #36513 (CORE One INDX)
                      • Fil. sensor troubleshooting #31114 (CORE One) #26114 (MK4S) #13114 (MK4) #27114 (MK3.9S) #21114 (MK3.9) #28114 (MK3.5S) #23114 (MK3.5)
                      • Chamber Mintemp error #31215 (CORE One) #35215 (CORE One L) #36215 (CORE One INDX)
                      • The heatbed cooled down during the power outage #31808 (CORE One) #35808 (CORE One L) #26808 (MK4S) #27808 (MK3.9S) #28808 (MK3.5S) #13808 (MK4) #21808 (MK3.9) #23808 (MK3.5) #17808 (XL) 
                      • The G-code isn't fully compatible #31803 (CORE One) #26803 (MK4S) #27803 (MK3.9S) #28803 (MK3.5S) #13803 (MK4) #21803 (MK3.9) #23803 (MK3.5) #17803 (XL) #12803 (MINI)
                      • Filament not detected #31804 (CORE One) #35804 (CORE One L) #26804 (MK4S) #27804 (MK3.9S) #28804 (MK3.5S) #13804 (MK4) #21804 (MK3.9) #23804 (MK3.5) #17804 (XL) #12804 (MINI)
                      • Print preview unfinished selftest #31801 (CORE One) #35801 (CORE One L) #26801 (MK4S) #27801 (MK3.9S) #28801 (MK3.5S) #13801 (MK4) #21801 (MK3.9) #23801 (MK3.5) #17801 (XL) #12801 (MINI)
                      • Crash recovery repeated crash #31811 (CORE One) #35811 (CORE One L) #26811 (MK4S) #13811 (MK4) #27811 (MK3.9S) #21811 (MK3.9) #28811 (MK3.5S) #23811 (MK3.5) #17811 (XL) #12811 (MINI)
                      • Crash recovery home fail #31812 (CORE One) #35812 (CORE One L) #26812 (MK4S) #13812 (MK4) #27812 (MK3.9S) #21812 (MK3.9) #28812 (MK3.5S) #23812 (MK3.5) #17812 (XL) #12812 (MINI)
                      • Loading obstruction #31119 (CORE One) #35119 (CORE One L) #17119 (XL)
                      • Homing calibration needed #31118 (CORE One) #35118 (CORE One L) #36118 (CORE One INDX)#17118 (XL)
                      • Calibrate homing from menu #31120 (CORE One) #35120 (CORE One L) #36120 (CORE One INDX) #17120 (XL)
                      • MCU overheat #35270
                      • PCB overheat #35271
                      • Data Timeout #35330
                      • AC Controller Fault #35273
                      • AC controller fault #35333 (CORE One L)
                      • AC controller fault #35335 (CORE One L)
                      • AC controller fault #35336 (CORE One L)
                      • Selftest failed (CORE One L)
                      • Bed fan is not spinning #35849 (CORE One L)
                      • PSU fan is not spinning #35850 (CORE One)
                      • Nozzle tool remains attached to the print head (CORE One INDX)
                      • Troubleshooting the MINI/MINI+ assembly
                      • Selftest failed (CORE One/+)
                      • Clogged nozzle (CORE One, CORE One L, XL, MK4/S, MK3.9/S)
                      • Firmware in the internal flash corrupted! #12608 (MINI)
                      • Adjusting belt tension (CORE One/+, CORE One INDX, CORE One L/+)
                      • SD cards and USB drives
                    • Diagnostics
                    • Print Quality Troubleshooting
                    • QR Error codes
                    • Print Error Messages

                  19 comments

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                  hendrikbock
                  •
                  I keep getting this error. Any way to resolve this?
                  Reply
                  Jan Kratochvíl
                  •
                  Hello. Please contact our support team
                  Reply
                  Maximiliano
                  •
                  Acaba de suceder al momento de encender la MK4
                  Reply
                  Blas Palencia - Prusa Research
                  •
                  Hola Maximiliano. Siento oír sobre este problema. Si te continúa pasando, haz unas fotos del error y contacta a mis colegas de Atención al cliente.
                  https://help.prusa3d.com/es/article/atencion-al-cliente_2287
                  Un saludo,
                  Reply
                  Herman
                  •
                  I just had a BSOD with the one core L firmware 6.5.7+1286 I had to reset it then I tried to reprint the model but the print bed remains against
                  Pressing the Nextruder 😬
                  I have noticed for a while since the new firmware that it has difficulty with living with bed.
                  Reply
                  TomTLC
                  •
                  I get this error when powering on. Resetting solves it. MK4S 6.5.3+12780
                  Reply
                  3DAllSorts
                  •
                  Exactly the same situation, same model and firmware as yours. Never happened before.
                  Reply
                  SedimTheGreat
                  •
                  Same here exactly same version CoreOne+ 6.5.3+12780 . Happens when I turn the power on , turning power off then back on makes go away. Just started happening 24 hours ago approximately out of nowhere.
                  Reply
                  JiKi
                  •
                  Same issue here. My routine: print finishes -> I remove the part without pressing any buttons -> let it cool fully -> power off -> power on the next morning. The message has been appearing more frequently with this pattern. CoreOne 6.5.3+12780
                  Reply
                  mlerley
                  •
                  Just happened again at power on. Hit the reset button and it came back fine.
                  Reply
                  ScenicArtist
                  •
                  Same here with my MK4.
                  Reply
                  Sekino
                  •
                  Same here, after power on, printer has 2 weeks, core one L costed 1700eur. Wtf?
                  Reply