MSI has released BIOS updates to fix a known issue that causes blue screens of death on Windows computers after installing the August 2023 preview updates.
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The company said the issue only affects Intel 700 and 600 series motherboards and traced the root cause to an Intel Hybrid Architecture firmware setting delivered with recent microcode updates.
The BSOD error affects systems with Intel 13th Gen Core CPUs (CPUIDs 0xB0671, OxBO6A2, and OxBO6A3) after installing KB5029351 (Windows 11 22H2), KB5029332 (Windows 11 22H1), and KB5029331 (Windows 10 22H2).
"The upcoming BIOS will include an updated version of Intel's CPU uCode, which will prevent more messages about 'UNSUPPORTED_PROCESSOR' issues from appearing. This upcoming update will correspond to both 13th generation and newer ones," MSI said on Wednesday.
"There will be more BIOSes available for download on MSI's official website for all Intel 700 and 600 Series models this week, and all BIOS versions will be available by the end of September."
"Since September, Intel has released microcode updates 0x11D and 0x411C to system manufacturers to address this issue in 13th Gen Intel Core processors with Performance Hybrid Architecture," Intel added in a separate advisory containing the full list of processors affected by the bug.
MSI provides guidance on how to use the M-FLASH tool to update your motherboard firmware in this video.
The full list of BIOS updates released so far that address this known issue is in the table below.
| MEG Z790 ACE |
| MPG Z790 CARBON WIFI |
| MPG Z790 EDGE WIFI |
| MAG Z790 TOMAHAWK WIFI |
| PRO Z790-A WIFI |
| PRO Z790-P WIFI |
| PRO Z790-P |
| PRO Z690-A WIFI |
| PRO Z690-A |
Suggestion: MSI accidentally breaks Secure Boot on hundreds of motherboards
MSI's announcement comes a week after Microsoft blamed OEM suppliers for the blue screen issues that hit its customers after installing last month's preview updates.
Microsoft first acknowledged the issue two weeks ago, two days after the release of the optional August cumulative update, saying that affected systems included those running Windows 11 21H2/22H2 and Windows 10 22H2.
Redmond said at the time that the problematic optional updates "may be automatically uninstalled to allow Windows to start as expected" and warned users not to reinstall them to avoid further problems.
This confirmed by user reports saying that preview updates were automatically rolled back after several system reboots.
To mitigate the problem, Microsoft also announced that it has stopped offering the problematic updates to potentially affected devices.
"We are working with OEMs and will temporarily mitigate this issue by not offering KB5029351 to Windows devices that may be affected by this issue," Microsoft said.
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source of information:bleepingcomputer.com
