---
title: "Nvidia Releases Emergency Hotfix Driver 621.12: Fixes Video Freezes and Black Screens on GeForce RTX 50 and RTX Spark"
description: "Nvidia has released Hotfix driver 621.12, fixing video freezes and black screens on GeForce RTX 50 and RTX Spark systems. The patch came out six days after Game Ready 621.01."
date: 2026-10-28T17:09:06.871Z
lang: en
url: https://xab.info/en/posts/nvidia-hotfix-driver-621-12-geforce-rtx-50-rtx-spark
tags: [nvidia, geforce-rtx, drivers, rtx-spark, windows, unreal-engine]
author: "Alexander Buran"
publisher: "XAB.info"
---

# Nvidia Releases Emergency Hotfix Driver 621.12: Fixes Video Freezes and Black Screens on GeForce RTX 50 and RTX Spark

![Nvidia GeForce RTX 50 graphics card in a black metal enclosure with cooling fans](https://xab.info/media/2026/10/28/nvidia-hotfix-drayver-621-12-geforce-rtx-50-rtx-spark/nvidia-hotfix-drayver-621-12-geforce-rtx-50-rtx-spark-1.webp)

## Key Points

- Nvidia released Hotfix driver 621.12 six days after the release of Game Ready 621.01.
- The patch resolves video freezes and black screens on GeForce RTX 50 and RTX Spark systems.
- The Hotfix includes four fixes, including an Unreal Engine 5.8 crash and flickering on MSI N16 Flip.
- The driver is optional, lacks WHQL certification, and will be included in the next official Game Ready update.

Nvidia has released Hotfix driver version 621.12, aimed at resolving video playback freeze issues and black screen occurrences affecting certain GeForce RTX 50 series graphics cards and RTX Spark systems. The update arrived six days after the release of the Game Ready 621.01 driver, in which these issues were discovered. As indicated in the manufacturer's materials, the patch is optional and based on the latest Game Ready series drivers, though it underwent a shorter verification cycle compared to WHQL-certified versions.

### Black Screens and Freezes: How the Issue Manifested

Nvidia acknowledged problems with the latest driver version on October 24, following numerous complaints, including from owners of GeForce RTX 5080 graphics cards. The driver failure could occur during video playback in Chrome, Edge, or the VLC player. In some cases, this caused connected displays to turn black for a few seconds. Subsequently, the company requested diagnostic logs from affected users to analyze the cause of the failure.

### Four Fixes Included in the Hotfix Driver

The new Hotfix driver version 621.12 contains four fixes. In addition to resolving the video playback issue, Nvidia fixed crashes in the Unreal Engine 5.8 engine that occurred when selecting the «Hit Lighting» (Ray Lighting Mode) lighting mode. According to the release notes, this fix applies not only to the GeForce RTX 50 graphics card series. For RTX Spark systems, a fix is also provided to eliminate image distortions when using the StarTech Thunderbolt 3 to HDMI 2.0 adapter. The fourth fix resolves intermittent screen flickering on MSI N16 Flip laptops.

### Driver Status, Availability, and Manufacturer Plans

Nvidia explained that Hotfix driver version 621.12 is based on the latest Game Ready series drivers and, like previous corrective releases, is optional. The company plans to include all fixes from the Hotfix driver in the next official Game Ready software update. The driver is available for systems running Windows 10 and Windows 11 (x64), as well as a separate package for Arm64-based RTX Spark devices running Windows 11. Users who experienced video playback issues after installing Game Ready version 621.01 can download the fix directly from the Nvidia support website.

## Fact-Check & Sources

- [Nvidia экстренно обновила драйверы, чтобы починить зависания видео и чёрные экраны на GeForce RTX 5000 и RTX Spark window-new](https://3dnews.ru/1150517/nvidia-ekstrenno-obnovila-drayveri-chtobi-pochinit-zavisaniya-video-i-chyornie-ekrani-na-geforce-rtx-5000-i-rtx-spark) - The primary source confirms the release of Hotfix driver 621.12, the date issues were acknowledged (October 24), the inclusion of four fixes, its optional status, and availability for Windows 10/11 x64 and Arm64.

## FAQ

### What issues does the Nvidia Hotfix driver 621.12 fix?

The driver fixes video playback freezes and black screen occurrences on certain GeForce RTX 50 graphics cards and RTX Spark systems, as well as an Unreal Engine 5.8 crash in «Hit Lighting» mode, image distortions on RTX Spark with the StarTech Thunderbolt 3 to HDMI 2.0 adapter, and screen flickering on MSI N16 Flip laptops.

### When did Nvidia release this Hotfix driver?

The update was released six days after the Game Ready 621.01 driver; the company acknowledged the issues on October 24.

### Is the Hotfix driver mandatory to install?

No, it is an optional driver based on Game Ready that underwent a shorter verification cycle than WHQL-certified versions. The fixes are planned to be included in the next official Game Ready update.

### Which systems is driver 621.12 available for?

The driver is available for Windows 10 and Windows 11 (x64), as well as a separate package for Arm64 architecture RTX Spark devices running Windows 11.