Windows 11 August Update KB5121003 Is Causing Crashes for Some Gamers, and RGB Devices May Be the Reason
Microsoft’s latest Windows 11 August update, KB5121003, appears to be causing serious trouble for some users, especially gamers with RGB-enabled accessories or internal components. After installing the update, affected systems have reportedly experienced game crashes, system freezes, and even Blue Screen of Death errors.
The issue seems to appear when launching certain games, including Arc Raiders, Marvel Tokon: Fighting Souls, and The Finals. In many cases, the crash is linked to a BSOD error showing “EXCEPTION_ACCESS_VIOLATION,” which usually points to a program or driver trying to access memory incorrectly.
According to Microsoft’s ongoing investigation, the problem is connected to RGB lighting hardware. Some peripherals and internal PC components with customizable lighting may install drivers or code components using file names similar to “inpoutx64.” When those drivers are present, launching specific games can trigger crashes on Windows 11 systems running the KB5121003 update.
The good news is that Microsoft has shared a temporary workaround. The company says users may be able to stop the crashes by disabling the inpoutx64 driver through the Windows Registry. However, this is not something casual users should do without caution. Editing the Registry incorrectly can cause system instability or create new problems, so it is strongly recommended to back up the Registry before making any changes.
To apply Microsoft’s temporary fix, open the Start menu, type “regedit,” and select Registry Editor.
Once there, look for the value named “Start” on the right side of the window. Double-click it and change the Value data to 4. After that, close Registry Editor and restart the computer.
This should temporarily disable the driver that may be causing the Windows 11 crashes. However, there is a trade-off. Microsoft warns that disabling this entry may cause RGB lighting features to behave unpredictably or stop working altogether. In other words, your PC may become more stable, but your lighting setup may not work as expected until a proper fix is released.
Users who rely heavily on RGB customization may be tempted to re-enable the Registry entry, but doing so could bring back the same crashing issue. For now, stability is likely the better choice, especially for anyone dealing with repeated BSODs or game crashes after installing KB5121003.
Microsoft will likely need to release another Windows 11 update to fully resolve the problem. Until then, affected users should either apply the workaround carefully or wait for an official patch if they are uncomfortable editing the Registry.
For gamers, this is another reminder that Windows updates can sometimes introduce unexpected issues, particularly on systems with third-party drivers, lighting software, and gaming peripherals. If your PC started crashing after the August KB5121003 update and you use RGB hardware, the inpoutx64 driver may be the first thing worth checking.
