My compaq v2000 function key seems to be not working.Pressing Fn F8/F7 to control brightness -not working but can alter screen brightness through control panel. Also scroll/number lock light not working. Keypad works fine in my compaq v5000 and swapping keyboards makes no difference as same problems persists. Could this be a motherboard problem as have recently had replacement motherboard fitted to v2000 and has only materialised since.
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Re: compaq v2000 function key not working?
To check system board, connect external keyboard and see if all keys function normally. If the external works OK, check connections on laptop keyboard, making sure contacts are clean and fully seated in the ZIF socket If the external fails to function properly it is the system board. LINK check page 66 of 238
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Pressing and holding the function key (abbreviated as "Fn") and pressing the up, or down arrow keys increases and decreases the brightness. You can also press Fn and F1 and F2 or F7 and F8 to increase and decrease the brightness. Immediate results should be seen on the screen making your screen darker or brighter.
Press on the "Fn," or function, key. It is located in the bottom-left corner of the keyboard, typically next to the "Ctrl," or control, key. Do not depress it.
Press on the "F8" key, which is located in the middle of the Presario's top-most row of keys. You should now be holding down the two keys simultaneously. Small illustrations of a sun and half moon often accompany the F keys allowing you to adjust screen brightness.
Monitor the progress bar that appears on your screen as the brightness increases.
Release the two keys once you have achieved the desired brightness.
When the notebook is operating in Windows desktop, hold the function (fn ) key down while pressing the f7 and f8 keys to increase or decrease the brightness of the display and more details visit the below link
Brightness is controlled by a couple of the function keys along the top row of your keyboard. Compaq's support page for this model is here, where you can find manuals, drivers and other information. Hold down the Fn key and the F7 key to lower screen brightness. Fn and F8 raise the brightness. If you look at those keys, you'll see they have a little icon of a sun and up and down arrows on them.
Decrease Brightness (fn+f7) The fn+f7 hotkey decreases the brightness of the notebook screen. The longer you hold down the fn+f7 hotkey, the more the screen dims. Decreasing screen brightness conserves power.» To increase screen brightness, press the fn+f8hotkey.
Increase Brightness (fn+f8)The fn+f8 hotkey increases the brightness of the notebook screen. The longer you hold down the fn+f8 hotkey, the more the screen brightens.» To decrease screen brightness, press the fn+f7hotkey.
Compaq says to DECREASE the screen brightness for your specific model, use the fn key in combination with the F7 key (basically, hold down the fn key and press and release the F7 key). That most likely means that the Function key to INCREASE the screen brightness is usually on one side or the other (F6 or F8). Also, look for what the other User suggested; the function key should have a picture of a sun or sunburst. Hope this helps.
Keith Stoffer Comptia A+ Certified Technician (20+ years)