Unlike basic CMOS reset tools that simply clear the date and time, version 2.0 specializes in (usually port 0x80 or 0x70/0x71) to overwrite BIOS checksums. This effectively:
PC CMOS Cleaner 2.0 is an older, specialized "offline" software utility designed to recover or reset lost BIOS/CMOS passwords . Unlike modern PC "cleaners" like that focus on file junk pc cmos cleaner 2.0 usb boot