SER9 HX 370 - daily BSOD SECURE_KERNEL_ERROR - request for latest BIOS

mibainfo

Hello,
my Beelink SER9 (AMD Ryzen AI 9 HX 370, 32 GB RAM) crashes almost daily with BSOD 0×18B SECURE_KERNEL_ERROR, mostly when idle overnight (25+ crashes in the last month, confirmed in Windows minidumps). Today it also crashed with 0×133 DPC_WATCHDOG_VIOLATION. Additionally, under heavy CPU load the fan cycles between 0 and 100% every 5–10 seconds.
The machine still runs the original factory BIOS, never updated:
STX.3xx.SER9.V103.P8C0M0C15.54.Link.GID (AMI, dated 2024-09-10)
OS: Windows 11 Pro 25H2 (build 26200), current AMD Radeon 890M driver 32.0.31021.5001, Memory Integrity (HVCI) enabled.
Could you please send me the latest BIOS for this model? SN code photo is attached.
Thank you and have a nice day!
Miro

PS
I found STX_3xx_SER9_V218_P8C0M0C15_74_Link_SCPC_20250813.zip on dl.bee-link.cn — is this the correct one for my unit, or should I use SER9T409.zip?

mibainfo

Here is my SN:

Product: AI PC
9Y.3880834N10
SN:YHX374LG80041
SER9-L-321TBVK0W64PRO-DP/XA

Beelink CS-June

mibainfo

Hello there,

Sorry for your waiting.

1、The BIOS version STX_3xx_SER9_V218_P8C0M0C15_74_Link should be suitable for your machine.

I have sent you the lastest BIOS file, please check your PM.

2、It is recommended that you can go to Microsoft official website to download the corresponding win11 PRO system file to reinstall, this is the tutorial: https://url.bee-link.cn/74zu

Please remember to backup the data.

3、Please press delete key as soon as you restart the PC, so that you can go to BIOS. Then go to boot page, set SSD as the first option. Please also send us a picture of the page of Safe&Exit.

Have a nice day~