I’m trying to work out exactly how this is supposed to have happened. If the bullet was shot through the floor above then there’s no path the bullet could have taken that would intersect the PC before it would hit somebody sleeping in a bed, unless the computer is in some way suspended above the bed, which not only doesn’t really sound realistic, you can also see from the photo that it clearly is on the floor.

In order to be able to hit a PC on the floor, it would have to be horizontal through a wall.

Also the word neighbour would almost always be used to refer to someone next door.