Leave the CMOS battery unplugged for roughly 15 minutes. Plug it back in, reconnect the main battery, snap the back cover into place, and turn on the computer. Check if the F2 prompt now lets you enter the BIOS without a password.

Warning: Forgetting this password can be detrimental. In many cases, it may require professional service or specialized unlocking tools to remove. Troubleshooting: Unowhy Y13 BIOS Locked