If you have an older Clevo (e.g., P150SM, W230SS) or a special unlock BIOS, you may need a bootable DOS USB:
For enthusiasts, the Clevo BIOS (specifically the "Overclocking BIOS" variants) allows users to adjust voltage, power limits, and BCLK (Base Clock). Updating to a newer version of the OC BIOS can sometimes offer more granular control or better stability when pushing the hardware to its limits. clevo bios update utility
Inside the ZIP folder, look for: