SER9 PRO HX 370 always maximum fan speed

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The fan always works at full speed, from boot to shutdown. Changing the power plan does not change the fan speed. In the BIOS CPU fan speed displayed as N/A and system temps as -1. Clearing CMOS did not help.
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Beelink CS-Rose

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1.Please adjust the VRAM in the BIOS, sometimes changing the VRAM can also help.

Here is the tutorial for adjusting VRAM: https://buildin.ai/lizong/share/92191a7b-6397-4bde-b54d-8269a2dce7a7

2.Please adjust the power options as follows

Please turn off the turbo boost. Adjust power settings: Adjust the power settings on your PC to optimize performance and reduce heat generation. Lowering the maximum processor state or using power-saving modes can help.Go to control panel —power option—change to High performance— change plan setting—advanced setting —processor power management— change both 100% to 99% , click save.

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Neither adjusting VRAM size (from 4G to 2G) nor 99% in the power plan helps.

The fan always runs 100%, with exactly same volume:

in bios
in windows when idle
in windows when prime95 runs in torture mode (works perfectly)
in sleep.

Sometimes after waking up one of the following problems are present:

Bluetooth does not function, device has the exclamation mark with code 10
PIN codes in windows login stop working with error 0×80090011

Usually they are fixed after reboot, but sometimes the pin has to be reset.