As per posted post they described that top row buttons are functions keys however when we try to boot the system and want to use F1 or F8 keys the doesn't show any response mean it doesn't recognize it. so how we can use to enter in bios settings. kindly reply me the my query asap.

you can't boot on safe mode under F8 function key?

Compaq Presario computers provide users with a row of function keys for added keyboard functionality. Function keys can serve a dual purpose as well.
Function keys are located at the top of Compaq Presario keyboards.
By learning how function keys work on a Compaq Presario you can take advantage of time saving keyboard shortcuts.Purpose
Use function keys to access menus, save changes and create shortcut keys.
Various applications, including Microsoft Office, allow you to select a function key as a shortcut key for running specific tasks. These settings are usually found under the Tools, Settings or File menu.
Each Compaq Presario computer has twelve function keys.
The most common used keys are "F2," "F8," "F10" and "F12."
The first three are used mainly to access and use the Compaq BIOS. "F12" is used to access a set of run from options during the boot process.

How to Access
Access function keys on a Compaq Presario by pressing any of the keys on the top row of the keyboard. Access the key's dual purpose by first pressing the "Fn" key located on the bottom row of keys.
Use function keys as shortcut keys by pressing them anytime while in the desired application. Remember, you must set them as shortcut keys first.
Note that some programs may already have certain function keys set as shortcuts.
Open menus and view the shortcut keys beside each menu item before setting your own shortcuts.


Dual Uses Each function key has a dual use. Press "Fn" plus the desired function key for the key's other use.
Below each function number is a small picture within a square or rectangle.
This dictates the dual use. "F1" opens help and support. "F2" serves as a printer shortcut.
Open your homepage by pressing "F3."
If you use dual monitors, switch between monitors by using "F4." "F5" puts your computer in stand-by mode.
Quickly lock your computer by pressing "F6." "F7" and "F8" adjust the screen's contrast.
Play and pause your music in Windows Media Player or other default media player by using "F9."
Press "F10" to stop playing media. Skip ahead or rewind media by using "F11" and "F12."

Other "Fn" Keys

In addition to function keys, the "Fn" key is also provides other keys with a dual use.
Any key with a small square on the key has a dual purpose such as the "scroll," "insert" and "delete" buttons.
Since laptop keyboards have no number pads, certain keys serve as the number pad by pressing the "Fn" key.

There's a display "toggle" sequence on your computer to send the signal to your external post (VGA?). Look at the Function keys (top row) for a screen icon. Hold Fn key down and press that Function key (on Dell, usually F8). You should get an indication on your screen of which outputs are active -- look for BOTH.

HI there,
The function keys (F1 through F12) are exactly that. Function Keys.
F1 generally opens a Help dialogue
F8 opens your windows startup manager when booting windows
F10/F11/F12 Can be used in some BIOS managers
These keys are dependant on what operating system you are using which will define what they do. Some OS's allow you to program these keys to open different things.

You must enter the "BIOS" at start up (sometimes called SetUp). Press F2 or F8 or F11 or other function key that will be required by your computer. Should tell you at boot.

Enter the BIOS settings, find the boot sequence and edit it. remember to save your changes.

BE VERY CAREFUL WHAT YOU SELECT!


Thanks for your visit today.

FN key is to be used in combination with the function keys like F1, F2 , F3 and so on to launch or initiate a specific function on your computer and utilities or features that came with in.

If you are referring to the "touch pad" on Laptop/notebook, if the touchpad on your laptop is not working and is unresponsive, it's not broken, you or someone else has accidently deactivated it with the function key.

Then you can try this,
Most laptops (if not all) come with a function key. The function key is labelled "Fn" and usually stands out from the rest - either the "Fn" is in a different color or the key as a whole. The function key works in conjunction with other keys on the keyboard especially the ones in the top row marked "F1" to "F12". The combination of function key with these keys lets you perform various tasks quickly such as shutting the screen, putting the computer in sleep mode, switching the wireless connection on and off etc.

By keeping the function key pressed and then hitting one of the keys ("F1" to "F12"), activates a task. You can activate and deactivate the touchpad by using the function key with the "F8" key.

Hope it helps.

there is a row of keys at the top of the keyboard labelled F1 to F12

Sir,
Definetly u want keyboard to press F8 for installating OS. Get another keyboard and connect it.
Thanks Good Luck

I know nothing about this machine in particular but immediately when the computer beeps... Generally the "delete" key gets you into the bios menu. If not that, then its almost always a function key "F1"-"F12" Just try running your finger down and back the function row as it boots if "DEL" fails Windows' boot menu comes up when you hit "f8" repeatedly before the windows logo appears. For older Windows versions use the left shift key and hold it just before and during the windows logo. Give it a try!