The ornamental design for a notebookcomputer, as shown and described.
FIG. 1 is a perspective view of a notebook 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;
FIG. 8 is a partial enlarged view of the encircled portion of FIG. 1;
FIG. 9 is a partial enlarged view of the encircled portion of FIG. 2;
FIG. 10 is a partial enlarged view of the encircled portion of FIG. 5;
FIG. 11 is a partial enlarged view of the encircled portion of FIG. 6;
FIG. 12 is a partial enlarged view of the encircled portion of FIG. 7; and,
FIG. 13 is a right side view thereof in a closed position.
The dashed broken lines show portions of the notebook computer and form no part of the claimed design. The dot-dash broken lines define the boundaries of the claimed design and form no part thereof.