Dell XPS 14 brightness will not change / "Painting as" Image

I just got a Dell XPS 14 Core i5 and the GeForce 630 M. I found that the brightness of the display does not change even if pressing the keys on the keyboard or adjust the slider on the screen the toggle to retouch the brightness comes. Thus, the keys work. I have updated the drivers for the 630M, chipset and Intel 4000 card. Also, I flashed the BIOS with the latest version. The Dell representative I talked to said that updating the drivers may solve the problem - it didn t. Then, through remote connection it did for me. No luck. So, what's the problem? Also, I have a weird and potentially related problem. All the images on the screen (bottom of screen, images in the browser, photo gallery, YouTube, etc.) have a look "painted" their. The videos are unstable and the images are very washed-out. Once again, after update, the problem persists. For me it is a hardware problem. Help someone!

Thank you

Type of system: XPS 14 L421X detailed description of the problem:

The display is of poor quality with graphs, images, videos and texts appearing pixelated and grainy. The problem is particularly notable for graphics online / on the internet. The contrast is also apparently, make images appear as less detailed, almost like a screen 256 older colors. The problem persists when the video output is connected to an external monitor via a HDMI cable.

The issue is subtle and may not be obvious to new users; Is why it can easily be neglected if not carefully read. I would recommend comparing the simultaneous side-by-side display of the same image on your computer and another computer files. In addition, display images at actual size of 100% in the comparison will help identify the problem. You should be able to see obvious color with gradients almost "oil painting" as artifact.

After months of wasted effort with XPS support replace the LCD screen, install a new copy of Windows and video drivers, shipping my computer for the installation of Dell for 'analysis of expert' and even replaced all of the device, the problem has not been solved.

A few days after updating my Windows to 8.1, I found the problem. Here is the solution: right click on the new button start click on "Mobility Center", under 'Color of the default' select generic color instead of splendid color. This will fix the problem.

Tags: Dell Laptop

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