It is likely to be ground mineralization. If the target is 'real', you will get the ping every time you scan and in any direction. Getting it constantly in one...
It means literally what it says. Repeat them in the next four rows. So, for example,... 3,4,3,4. Unless it says to repeat row three four times, THEN repeat row four...
Sounds like either your battery isn't charged, is dead, or not inside your laptop. For Windows: when your laptop is on, you'll see a battery icon in the tray. It'll...