⚡ Note: Some modern laptops store passwords in a separate EEPROM not reachable via this tool. In those cases, physical jumper/shorting or desoldering is required.
After reboot:
When you set a BIOS password, the motherboard stores an encrypted hash in sector 0x0E or 0x0F of the EEPROM. Standard clearing methods (like moving a jumper or removing the battery) clear the RTC (Real-Time Clock) data but do not always erase the password hash on newer devices (post-2016).
PC CMOS Cleaner 24 works by:
This is why the keyword "work verified" is so critical. Many free tools claim to do this but fail because they lack the verification routine. PC CMOS Cleaner 24 includes a built-in checksum validator to confirm the password is truly gone.
After downloading the ISO file (typically 450MB–700MB), you must verify its integrity.
Use a hash checker (e.g., CertUtil on Windows): pc cmos cleaner 24 iso download work verified
certutil -hashfile PC_CMOS_Cleaner_24.iso SHA256
Compare the output to the hash provided on the download page. If the hash doesn’t match—delete the file immediately.
Ethical Usage: Only use PC CMOS cleaner tools on hardware you personally own or have explicit written permission to repair.
Search for the official PC CMOS Cleaner 24 (version 7.0 or higher). As of 2025, the verified working version has the following checksum: ⚡ Note: Some modern laptops store passwords in
Do not download from random file hosts. Recommended sources:
The internet is full of malicious ISO files disguised as BIOS cracking tools. Downloading an untested ISO can result in:
A work verified download means that at least one trusted source (reputable forum member, technician, or YouTube creator) has tested the SHA-1 hash of the ISO file against a clean, working original. Verification typically includes: After reboot: