Chosen Solution
Lost bios password , i removed the battery but keep ask for password Lenovo AIO C20-00
https://www.youtube.com/watch?v=Ax6z6umD… Not completely sure if thats the same all in one pc/ motherboard you have but I went based on what you told me. (Lenovo AIO C20-00) If you look in the vid, he never actually takes out the battery, he unplugs a cable that powers the CMOS battery it appears. Waits a few seconds then plugs it back in and it works. Resetting the BIOS does erase a BIOS pass. You’re just not doing something right. Watch that video. PS. From what I can see and watch, it does not appear to have a jumper. Just the battery.
