The ornamental design for a laptopcomputer, as shown and described.
FIG. 1 is a front, right side perspective view of a laptop computer having
its display housing opened; FIG. 2 is a rear, left side perspective view
thereof; FIG. 3 is a front elevational view thereof; FIG. 4 is a top view
thereof; FIG. 5 is a left side elevational view thereof; FIG. 6 is a right
side elevational view thereof; FIG. 7 is a rear elevational view thereof;
FIG. 8 is a bottom view thereof; FIG. 9 is a front, right side perspective
view of the laptop computer having its display housing closed; and, FIG.
10 is a front, right side perspective view of the laptop computer having
its display housing closed and handle extended. The broken lines are shown
in the views for illustrative purposes only and form no part of the
claimed design.