HP Compaq 620 Notebook-PC - Manual (Page 45)

Opening Help and Support
Press fn+f1 to open Help and Support.
In addition to providing information about your Windows operating system, Help and Support provides
the following information and tools:
● Information about your computer, such as model and serial number, installed software, hardware
components, and specifications
● Answers to questions about using your computer
● Tutorials to help you learn to use the computer and Windows features
● Updates for the Windows operating system, drivers, and the software provided on your computer
● Checkups for computer functionality
● Automated and interactive troubleshooting, repair solutions, and system recovery procedures
● Links to support specialists
Decreasing screen brightness
Press fn+f2 to decrease screen brightness. Hold down the hotkey to decrease the brightness level
incrementally.
Increasing screen brightness
Press fn+f3 to increase screen brightness. Hold down the hotkey to increase the brightness level
incrementally.
Switching the screen image
Press fn+f4 to switch the screen image among display devices connected to the system. For example,
if a monitor is connected to the computer, pressing fn+f4 alternates the screen image from computer
display to monitor display to simultaneous display on both the computer and the monitor.
Most external monitors receive video information from the computer using the external VGA video
standard. The
fn+f4 hotkey can also alternate images among other devices receiving video information
from the computer.
The following video transmission types, with examples of devices that use them, are supported by the
fn+f4 hotkey:
● LCD (computer display)
● External VGA (most external monitors)
● HDMI (televisions, camcorders, DVD players, VCRs, and video capture cards with HDMI ports)
● Composite video (televisions, camcorders, DVD players, VCRs, and video capture cards with
composite-video-in jacks)
NOTE: Composite video devices can be connected to the system only by using an optional
docking device or optional expansion product
Using the keyboard 33