But there, in the heart of Device Manager, was the Yellow Triangle.
He searched Dell’s support site. The E6420 page had drivers, but the "Security" category listed something vague called "Dell ControlVault Driver." He downloaded it. Version: 2.3.00. Installer ran. Nothing changed. broadcom ush driver for dell latitude e6420
He tried forcing the driver manually. Pointed Windows to C:\Windows\INF . No luck. Tried extracting an old Dell executable with Universal Extractor. Got a dozen .sys files, none of which matched the hardware ID. But there, in the heart of Device Manager,