HP pushed a critical BIOS update through Windows Update. It bricked its most expensive laptops.

HP customers are reporting that BIOS updates pushed through Windows Update are rendering premium laptops unbootable. The affected devices include the ZBook Ultra G1a, a mobile workstation that costs upwards of £4,000, and the EliteBook X G1a. The updates were flagged as critical, meaning they were applied automatically with no user intervention required.