In microsoft word when you highlight existing text you want to replace you are in what mode

Aletter or menu command that starts an action when the user presses the designated letter and the alt key together is called what?

Ou listened to a song on your computer. did you use hardware or software?

Ihave a singular monitor that is a tv for my computer. recently, i took apart my computer and put it back together. when i put in the hdmi cord and booted the computer to see if it worked, the computer turned on fine but the screen was blue with "hdmi no signal." i've tried everything that doesn't require buying spare parts, any answer is appreciated!