At an unknown point, the laptop ended up in the bunker of the author who wrote journals #1, #2 and #3.
In "Into the Bunker," after Dipper Pines and Wendy Corduroy end up separated from Mabel Pines and Soos while exploring the bunker, Soos picks up the laptop after mistaking it for a suitcase. At the time, he was dressing up as a scientist and thought it made him look more serious. When the group leave the bunker, Soos ends up taking it with him and when he holds it up, he, Mabel and Dipper realize it is actually a laptop after it flips open.
In "Sock Opera," Soos repairs the laptop and Dipper and Mabel head to the library. Upon booting up, the laptop has a start up animation of Stan's machine and demands a password. Throughout the first half of the episode, Dipper makes multiple attempts to get into the laptop but fails. Some of them include: password, journal3, overlord, thrilled, patootie, spooking, craniums, reawaken, and vocalize. The laptop states that too many attempts have been made and starts a countdown that will delete all the data on it. Dipper makes a deal with Bill and he posseses Dipper's body. Bill then throws the laptop onto the ground and stomps on it, destroying it.
Dipper is still trying to determine the author's identity by "Society of the Blind Eye" and has the broken remains of the laptop. Upon closer examination, Mabel discovers McGucket's name written on one of the pieces, leading the twins to investigate Old Man McGucket as the possible author.
The laptop at first appears to look like an old metal suitcase. When it is opened, however, it is discovered that it is an old laptop. Above the screen is a blue sticker, that says "PROPERTY OF F" and it is rusted in some areas. Some of the keys are not like a normal computers keys as it has a few orange keys and cipher signs on the orange keys as well as some cobwebs dangling on the sides and on the screen.
When it was repaired, it had tape on two of its corners and a bandage on the screen.
Model number: MO52584