Pressing the keyboard changes color on the screen

[BerkN]

when I press the + key on the computer, and at the same time when I connect a device to the usb ports, the colors on the screen change, what could be the reason? Looking forward to your help.

you can contact me from this hotmail account.  " [edit]"

Thank you very much in advance

[Riddle_Decipher]

@BerkN By changing colors do you mean, brightness? or does it change into rainbow of colors? Also, did you check if any of the keys are physically stuck when pushing the + key? If yes, disable the keyboard and check with an alternate/external keyboard to check if the issue occurs on it.

Also, update the BIOS, Graphics card and the Chipset drivers using this link: click here to find and install the same.

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[BerkN]

Thank you for your answer. The color changes are changing like yes rainbow. I did not make any changes or contact with the screen, but my drivers are all up to date. But only the keys on the right side of the keyboard, this problem, for example, w, a, s or ESC does not happen on the left keys, such as the warranty of the device there is no guarantee, but I do not want to break, but I wonder what the problem. İ have for you a photo what i mean thank you again. 

[Riddle_Decipher]

@BerkN Could you share the picture you are referring to? Also, its possible the high contrast is activated accidentally and that's causing the issue, please try the below steps:

• Select the Start   button, then select Settings  > Ease of Access > High contrast. 
• Turn on the toggle under Turn on high contrast. Then, choose a theme from the drop-down menu. You can customize colors for things like links and button text. When you're done, select Apply.
• To turn off high contrast mode, switch off the toggle under Turn on high contrast.
• To turn high contrast mode on or off from the sign-in screen, select the Ease of access button in the lower-right corner, then turn on the toggle under High Contrast.
• To turn high contrast on or off from the keyboard, press left Alt + left Shift + Print Screen.

If you wish to thank me for my efforts, you could click on "Accept as solution" on my post as the solution should help others too.