is a freeware utility designed to reset CMOS (Complementary Metal-Oxide-Semiconductor) memory without physically opening the computer case or removing the motherboard battery.
: PC CMOS Cleaner 2.0 is an older utility. On modern systems with UEFI Secure Boot pc cmos cleaner 2.0 usb boot
With the bootable drive inserted:
exists from major motherboard or BIOS vendors. The name appears in some third-party tools, DIY boot disks, or older forum posts — often as a renamed DOS utility or batch script that clears CMOS by writing to I/O port 0x70 / 0x71 or resetting BIOS configuration data. is a freeware utility designed to reset CMOS