GeForce/RTX Spark Hotfix Display Driver version 621.12

User Support Hub Install, Performance & Graphics
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1

Please use this thread to discuss the NVIDIA GeForce Hotfix Driver version 621.12.

GeForce/RTX Spark Hotfix Display Driver version 621.12 is based on our latest GeForce Game Ready Driver and RTX Spark Game Ready Driver.

This hotfix addresses the following:

  • Fixed an issue where video playback may freeze or black screen on some GeForce RTX 50 Series GPUs/RTX Spark after updating to GRD 621.01. [6979343]
  • Unreal Engine 5.8 may crash when Ray Lighting Mode is set to Hit Lighting [6914378]
  • [RTX Spark] HDMI monitor connected to StarTech Thunderbolt 3 to HDMI 2.0 adapter may show corruption [6054761]
  • [MSI N16 Flip] Intermittent flickering may be observed [6945359]

Select Download
Click here to download the GeForce Hotfix display driver version 621.12 for Windows 10/ Windows 11 (x64)

Click here to download the RTX Spark Hotfix display driver version 621.12 for Windows 11 (ARM64)

2

I decided to test the new NVIDIA hotfix driver.

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image1435Ă—444 39.2 KB

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image1980Ă—1134 80 KB

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image1612Ă—477 32.5 KB

There’s no significant difference compared to the previous driver, apart from the hotfixes themselves. So, if you’re not experiencing any issues, you can safely stick with 621.01 or even 617.42.

3

Also had a crash (DPC) watchdog violation 0x133 (first time ever). Checked Windows maintenance and noticed the first event on the day (10/22/2026) of the 621.01 install and then (3) more on (10/26/2026). And (2) more on (10/28/2026) all showing the following event…

A problem with your hardware caused Windows to stop working correctly. Problem signature Problem Event Name: LiveKernelEvent Code: 141 Parameter 1: aaaaaaaaaaaaaaaa Parameter 2: aaaaaaaaaaaaaaaa Parameter 3: aaaaaaaaaaaaaaaa Parameter 4: aaaaaaaaaaaaaaaa OS version: 10_0_26300 Service Pack: 0_0 Product: 768_1 OS Version: 10.0.26300.2.0.0.768.101 Locale ID: 1033 Extra information about the problem Bucket ID: LKD_0x141_Tdr:6_IMAGE_nvlddmkm.sys_Blackwell

Systems specs: MSI Codex Series R2 B14NUC7-095US Windows 11 Home 26H2 26300.9818 i7 14700F MSI Pro B760 VC Wifi II (AMI BIOS 7D98vBJ 2026-09-14) RTX 5060ti OC 32GB DDR5 5600mhz 2TB MSI M482 nVME (C:) Neo Forza NFS011SA31T-60 SCSI Disk Device 1TB (E:) Kingspec SATA 4TB SSD (I:) 4TB SPCC SSD 4TB (D:) 4TB Crucial CT4000P3PSSD8 nVME (F:) Seagate Backup+ Drive (G:) 650w Gold PSU

Also ran the following commands (in this order)… Dism.exe /online /Cleanup-Image /checkhealth Dism.exe /online /Cleanup-Image /scanhealth Dism.exe /online /Cleanup-Image /Restorehealth sfc /scannow Dism.exe /Online /Cleanup-Image /AnalyzeComponentStore Dism.exe /Online /Cleanup-Image /StartComponentCleanup RESTART computer as the last step. No issues found.

Have now uninstalled using DDU (Safe mode) the 621.01 drivers and installed the 621.12 HF drivers and will monitor this.

4

It’s worth pointing out that this happened with driver 621.01, not the 621.12 Hotfix.

5

Yes, only 1 day now with the 621.12 HF drivers and nothing yet.