Cpuz143-x64.sys Jun 2026

Standard applications usually run in "user mode," which restricts them from directly accessing critical hardware data for security reasons. To read the specific sensor data, voltages, and clock speeds that CPU-Z displays, the software requires a "kernel-mode" driver. cpuz143_x64.sys is that bridge; it sits deep within the Windows kernel to safely extract hardware telemetry.

Because the driver grants ring-0 access without proper IOCTL validation in some versions, it has been repurposed by: cpuz143-x64.sys

cpuz143-x64.sys is a small but powerful kernel driver that enables CPU-Z to work correctly. For most users, it’s completely safe and useful. However, if you encounter BSODs, suspect a leftover file from an old version, or simply don’t use hardware monitoring tools, it’s safe to remove. Standard applications usually run in "user mode," which