Hp elitebook 2740p cannot adjust screen brightness

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HP EliteBook 8460p Notebook PC

Are you asking because the screen has gone dark?Darkness is a backlight issue,can be the screen backlight,inverter or the cable itself causing it.Screen too bright can be adjusted via personalization or often keyboard shortcuts that have what looks like a sun symbol on them,the left key darkens when pressed and the right brightens

Sounds like your keybinding/hotkey combo is not doing its job. (or your bulb in the display is going out)

You can open up Control Panel and adjust brightness from there.

Step 1 Click "Start ' Control Panel ' Hardware and Sound ' Power Options" to open the Power Options window.
Step 2 Click and drag the bottom "Screen Brightness" slider to the right to increase screen brightness and to the left to decrease it. Making this adjustment changes the brightness level only for the current power source; if you change power sources, the screen brightness may change again.
Step 3 Click "Change Plan Settings" on whichever power plan is currently selected.
Step 4 Click and drag the "Adjust Plan Brightness" slider to the right to increase brightness for each of the power sources, such as "On Battery" or "Plugged In." If you want high-precision numeric control, you need to access the advanced settings.
Step 5 Click "Change Advanced Power Settings."
Step 6 Click "+" next to "Display" and then "Display Brightness" to expand these options.
Step 7 Click "On Battery" and enter a percentage in the field provided. Choosing "100" will set the screen to maximum brightness; any other brightness will be a percentage of the maximum brightness. To increase the brightness, make sure the number you enter is higher than the current value.
Step 8 Click "Plugged In" and set its brightness percentage.
Step 9 Click "Apply" and then "OK" to close the Advanced Settings window.
Step 10 Click "Save Changes" to save any changes you made on the Edit Plan Settings page. If you only make changes in the Advanced Settings page, the Save Changes button will be grayed out. If that's the case, just click "Cancel."


Hope this helps!

have you tried a usb mouse ?? as if that works it will be the touch pad is playing up. you can disable it and use a wireless mouse or usb one. as it would be cheaper then replacing the touch pad.

try HP hotkey support i.e "sp51993".....it worked for me for the same problem.

The best way to reset the BIOS back to the defaults (if there isnt a setting to install the defaults), is to remove the BIOS battery for 15mins. This will drain the charge from the BIOS, insert the battery and then go to the BIOS setting to set the Date and Time.

This sounds like an issue in the power settings, you can get to them through the display options (right click desktop, go to properties, look for power settings)

hello my brother you can try this way

thank you

Right click on the battery icon, select adjust screen brightness and adjust it as required.

There should be a Fn button to adjust this promblem. Normally the f9 and f10 key, F9 for down, and f10 for up on brightness. Press your FN key which is located between your left ctrl and alt keys with the f9 or f10 for brightness adjusment. If not you may need windows to do this by clicking your battery icon once until you get a small screen saying power balance, below you can see a link to saying adjust screen brightness. This is for vista and window7.