HP A6110n - Pavilion - 2 GB RAM Getting Started Manual page 91

To select items in Windows Media Center, use the arrow keys on the keyboard (with
Numbers Lock off) or use the arrow buttons on the remote control, and then press the Enter
key on the keyboard or press the OK button on the remote control to enter your selection.
If you have media playing, such as music or a slide show, it appears in an inset window in
the lower-left corner. To switch from watching your media in the inset window to watching
it in full-screen mode, use the arrow buttons on the remote control or use the arrow keys on
the keyboard to select it, and then press OK on the remote control or press the Enter key on
the keyboard.
Inset Window Full-Screen Mode
81
Using Windows Media Center