- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
To increase the brightness, either swipe up from the bottom to get the control panel, and increase the brightness there (slide the slider just below the 5 circles to the right) or go into Settings > Display and Brightness> Increase brightness using slider. You can also turn on the auto brightness from here if it is off, or turn it off if it is not working like you want it to.
Examine the keyboard. There should be a symbol on most of the function keys (F1, F2, etc.). Look for one that looks like a sun or lightbulb, either with an arrow pointing up or with the sun/lighbulb filled in. Hold the 'Fn' key, and tap the up/bright sun/lightbulb key a few times. The screen should increase in brightness.
If you cannot find the specified keys, you may be able to adjust brightness from inside Windows. Right click on the battery icon in the taskbar and open 'power options'. Look for a sun and moon with a sliding bar between them. You might also be able to adjust brightness by customizing your desktop (right click on the desktop and look for the proper menu).
You can try both of this steps: 1. Press and hold the Fn key and press either arrow up or down to increase or decrease the brightness. 2. Restart the computer and tap F2 key 5-10 times during the dell logo splash screen to go to BIOS information. select video by pressing the arrow down key, then press enter. select either Brightness or Brighness AC then press enter, then select the brightness that you desired.
Does it do this on the wall power supply?, I suspect not?, It may well be in the Power Settings for the system, but if on battery sometimes the screen dulls right down to save battery, and the lower th battery the duller the screen... If at home, it really should be plugged into the adapter, and really only used off adapter when out, not near power. The power settings ACPI and used by Windows. seems to be to dowith it as you say BEFORE Windows loads, it is OK, after it is not, so it must be a Windows setting?
If you look on your keyboard there will be a fn key and if you look at the other keys (generally on the up and down arrow) you will see 2 symbols which looks like the sun they increase and decrease the brightness
Hold down the Fn key and press one of the keys if the screen brightness decreases press the other one
Please can i ask that you leave feedback and vote if this has been useful
Depending on how old your computer is, your lamps may be failing,
Or you may have reduced the brightness, look for two F buttons generally F7 and F8 for screnn brighness, hold down Fn or function button and tap F8 to increase brightness.