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 view thereof;
FIG. 5 is a right view thereof;
FIG. 6 is a top view thereof; and,
FIG. 7 is a bottom view thereof.
The dashed lines show portions of the notebook computer and form no part of the claimed design. The dot-dash lines in FIGS. 1 and 2 represent a boundary of the claimed design and form no part of the claimed design.
Two areas on both sides of the dot-dot-dash line in FIGS. 1 and 2 show different visual appearances such as different surface textures, patterns or colors. The dot-dot-dash line in FIGS. 1 and 2 represents a boundary between the two areas and forms no part of the claimed design.