Hello, today I've decided to remove my password to bios and change settings. At startup, I pressed the F2 key and entered the password. Everything was going on normally. In the Security menu, I entered the password again, then left the lines blank and pressed the enter key twice. So I removed the old password. Then I moved to the Boot menu and wanted to enable USB ODD that was disabled. I have reached the appropriate line and pressed Shift + 1 keys. But nothing happened, I tried it several times, without any results. I tried to change other lines, but nothing could change. I thought if it had anything to do with a password, so I moved back to the Security menu and tried to enter the password again. After filling in the first line, I realized that I was entering a new password, so I pressed the ESC to interrupt it. It occurred to me that maybe before changing the settings (after deleting the old password), I need to restart the laptop and re-enter in the bios. I pressed the F10 key and saved the settings. After the restart, a password was required to access bios (I do not understand why when I removed it), I tried to enter my old password, but it did not work. Can you help me ?