The ornamental design for a laptopcomputer, as shown and described.
FIG. 1 is a front perspective view of a laptop computer, showing our new design;
FIG. 2 is a front view thereof;
FIG. 3 is a rear view thereof;
FIG. 4 is a left-side view thereof;
FIG. 5 is a right-side view thereof;
FIG. 6 is a top view thereof;
FIG. 7 is a bottom view thereof; and,
FIG. 8 is a bottom perspective view thereof.
In the drawings, the claimed design is defined by the shaded surfaces. Broken lines immediately adjacent shaded surfaces represent boundaries of the claim and form no part thereof. All other broken lines depict portions of the laptop computer that form no part of the claim.