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 another perspective view thereof in an opened state;
FIG. 9 is an enlarged view of an indicated portion in FIG. 1 thereof;
FIG. 10 is an enlarged view of an indicated portion in FIG. 2 thereof;
FIG. 11 is an enlarged view of an indicated portion in FIG. 4 thereof; and,
FIG. 12 is an enlarged view of another indicated portion in FIG. 4 thereof.
The dashed broken line showing of portions of the notebook computer is for the purpose of illustrating unclaimed portions of the notebook computer and forms no part of the claimed design.