I can tell you this time is really heavy. I found a new daily bug.

Some Windows 11 users have encountered a black screen bug after installing the January 2026 Patch Tuesday security update. This problem occurs immediately after power-up or restarting the system. Although the unit is still running normally, the image cannot be displayed on the screen.

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The patch that was identified as the cause was KB5074109, affecting both the 24H2 and 25H2 versions of Windows 11, according to Windows Latest, but that bug didn't happen to every machine, only some of them found this bug.

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The symptoms that users experience are completely dark, like a non-stick screen, when the fan is still rotating, the system is still active, and in some cases it can be connected through Remote Desktop, reflecting that the problem occurs at the display level, not at the system as a whole.

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According to an analysis in the expert community, this is mainly due to incompatibility between new patches and certain types of software, particularly Windows eye makeup customizers such as ExplorerPatcher or Taskbar and Start Menu customization tools, which may conflict with system files that change after updating.

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It has also been reported that some versions of the screen card driver are not fully interoperable with Windows' new Display Manager, resulting in the system being unable to send images out of the screen.

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For those who have encountered a problem, try to reset the screen card driver with the Windows + Ctrl + Shift + B keyshortcut or enter Recovery Mode to uninstall the KB5074109 patch first. While those who have not updated, it is recommended to delay installation and backup until Microsoft issues an official patch.

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Source: WindowsLatest

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