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Re: Screen on Aspire 3000 is very very dim
Backlight or inverter failure sorry to say. No telling which without substitution. Backlights are mostly built into the top of the screen and are tricky to replace. Inverters are generally sited at the bottom of the screen under the facia panel. Look around ebay for replacements
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Below are instructions to adjust brightness on HP laptop
Press the "Fn" key with the computer turned on and hold the key.
Press the "F7" or "F8" key on some HP laptops, which are
printed with a small sun icon on the key. The sun icon is filled on the
function key for dimming the laptop. The other key is printed with a
hollow sun icon for brightening the screen.
Press the "Fn" and left arrow keys together on some HP
laptops to turn down the brightness. The "Fn" and right arrow key will
increase brightness. Press and release the right arrow key repeatedly,
while holding down "Fn," to decrease the screen brightness slowly, or
hold the keys to darken the screen as low as the setting will go.
For HP Monitors
Press and hold the down arrow key on the front panel of the
monitor below the screen to turn down the brightness on the external
monitor to the lowest setting.
Repeatedly press the down arrow button to dim the monitor gradually.
Press the up arrow key on the monitor to increase brightness.
Press and hold the blue 'fn' key and press and release the left/right arrow keys to dim/brighten the screen. It it the arrow keys on most Acer laptops that control this. If it's not the arrow keys, then look for keys with a picture of the sun on them. Press and hold the 'fn' key and then tap the 'sun' keys to adjust brightness. Please let me know if this helps or not.
There is a master function key that you hold down while tapping another function located on the keyboard. This all depends on the model of laptop. Next time try to giva a little more info like make and model, which is located on the bottom. The function key or Fn key is usually located on the keyboard near the Alt and Control key lower left. while holding this key down, you tap the corresponding brightness key on the number of the keyboard, some times the brightness is on the 4 arrows on the right side of the keyboard...sometimes they are the numbers 6 or 7 look for what appears to be a symbol that looks like the sun or a light. Hold down Fn and tap the key that brightens the display.
If u check your keyboard you'll notice there's a button marked 'fn' , might be in a different color,now if you look good you'll notice a little star object usually on the left and right arrow key,now to use this additional function u need to press and hold the 'fn' button then to adjust the brightness press the right arrow key until seem fit or the left to adjust.