Which function key allows to switch to tv
You need to press hold the FN key and press the F4 function key once which toggles the display to the External Display source like the television connected along with the LCD of the Notebook.
If the FN and F4 key combination is pressed again, the display will dissappear from the LCD of the Notebook and remain only on the external source.
If the FN and F4 key combination is pressed third time, the display will be back on the LCD of the Notebook and will not remain on the External display source.
Here are these details in other way :
First time pressing FN + F4 ---> Display on LCD and External display
Second time pressing FN + F4 ---> Display not on LCD but on the External Display
Third time pressing FN + F4 ---> Display back on the LCD and not available on External Display (Normal position).
Below are the details of what the Function keys in your DV1000 Notebook work :
fn + f1 Opens Help and Support Center
fn + f2 Opens print options window
fn + f3 Opens default Internet browser
fn + f4 Switches the image among displays
fn + f5 Initiates Standby
fn + f6 Initiates QuickLock
fn + f7 Decreases screen brightness
fn + f8 Increases screen brightness
fn + f9 Plays, pauses, or resumes an audio CD or DVD
fn + f10 Stops an audio CD or DVD
fn + f11 Plays the previous track or chapter on an audio CD or DVD
fn + f12 Plays the next track or chapter on an audio CD or DVD
fn + esc Displays system information.* (*To clear the system information display, press esc.)
Hope this helps...