System Issues– Category –
This book provides information on how to solve serious problems related to the core of the Windows system, such as blue screen of death (BSoD), inability to boot, and automatic reboots. It also includes how to check the Event Viewer and how to use repair tools.
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[Independent Verification] Will the Secure Boot issue brick your graphics card in 2026? We asked official Microsoft support directly.
Recently, in the PC build and gamer community, there has been talk that "the old Secure Boot certificate (Microsoft Corporation UEFI CA 2011) will expire in June 2026, and that PCs may be affected by graphics cards..." -
Windows 11 won't boot? "Secure Boot 2023 Signature" issue and how to create a repair tool
The Windows 11 preview update KB5074105, released on January 29, 2026, and the next official update will complete the preparation phase and include Secure Boot... -
[Solved] What to do when you set "Maximum Memory" in msconfig and it won't start or you get a blue screen [BAD_SYSTEM_CONFIG_INFO]
Following information posted online, I checked "Maximum Memory" under "Advanced Boot Options" in System Configuration (msconfig), and after rebooting, Windows 11... -
[Bug] Cause and solution for the issue where text is displayed vertically (horizontally) after applying KB5070311 [Windows 11 24H2/25H2]
After installing the preview update KB5070311 for Windows 11 (24H2/25H2) released on December 1, 2025, some software may display strange characters... -
[Bug] The "Password" icon disappears on the Windows 11 lock screen and how to work around it
Microsoft has announced a known issue with the lock screen sign-in options in Windows 11 versions 24H2 and 25H2. As of August 2025... -
[Solved] Why Windows Defender Firewall stops with "The parameter is incorrect (ID 7024)" and how to fix it
Are you experiencing issues with the Windows Defender Firewall service stopping automatically in Windows 11 or Windows Server 2022? Check the Event Viewer... -
What causes "Error 1801 (TPM-WMI)" to be logged in the Event Viewer and how to fix it from Microsoft
After applying the October 2025 security update, the following "Error Event ID 1801 (TPM-WMI)" has been recorded in the Event Viewer (System Log) on my PC... -
Win11 KB5067036 bug: "Processes remain even after closing Task Manager"
The official release notes for the optional preview update "KB5067036" released on October 28, 202510 for Windows 11 version 24H2/25H2 state, "Task Manager... -
[Solved] Mouse and keyboard not working issue in WinRE fixed with KB5070773
Microsoft has recently released a fix for a serious issue that has been plaguing many Windows 11 users: USB mice and keyboards becoming unresponsive in the Windows Recovery Environment (WinRE). -
Mouse and keyboard not responding in Windows Recovery Environment (WinRE)? The cause is KB5067039
[For English Readers] This article explains a bug where the mouse and keyboard do not work in the Windows Recovery Environment (WinRE) after a Windows Update... -
[Verification] Solution to the issue where adding a new user to a Windows 10 ESU-enrolled PC displays "Service Ended"
Support for Windows 10 ended on October 14, 2025. Many individual users are considering using the paid Extended Security Updates (ESU) (one year free if certain conditions are met). -
ASRock B550M Pro4 Motherboard BIOS Update Method and Notes
The PC I use is a BTO PC purchased from PC Koubou, and it has an ASRock B550M Pro4 motherboard. I'm using an ASRock B550M Pro4 motherboard...