System:

• Dell Inspiron 16 7610

• Intel i7-11800H

• BIOS 1.35.0 (Sept 2025)

Issue after BIOS update:

• GPU fan runs at or near full speed, even at idle

• CPU fan does not ramp appropriately, even when CPU temps are high

• HWInfo confirms CPU package temps reaching 95–97°C with repeated thermal throttling

• This occurs even at light load and sometimes immediately after startup

Troubleshooting performed:

• BIOS reset to defaults

• EC power reset

• Dell Power Manager profile changes

• Clean OS environment

• Physical fan replacement (no change)

Important detail:
BIOS 1.35.0 installs new Secure Boot certificates and explicitly blocks BIOS rollback, so reverting to earlier versions is not possible.

This strongly points to an EC / fan-table regression introduced in BIOS 1.35.0, rather than a hardware or OS issue.

If anyone else with this model has seen similar fan or thermal behavior after recent BIOS updates, I’d really appreciate confirmation.