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×InformationHP Solution Center Adobe Flash player error
Please check this document to find the workaround solution for Print and Scan - HP Solution Center doesn't open
InformationFix Windows 10 Update IssuesResolve Windows 10 or update issues on HP computer or printer– Click Here
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×InformationHP Solution Center Adobe Flash player error
Please check this document to find the workaround solution for Print and Scan - HP Solution Center doesn't open
InformationFix Windows 10 Update IssuesResolve Windows 10 or update issues on HP computer or printer– Click Here
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HP Recommended
@Sukalyan Welcome to HP Community!
I understand that you are facing a backlight issue.
In Windows, press the fn (function) key and the backlight key. If nothing happens, check the BIOS settings.
In the BIOS, select BIOS Setup or BIOS Setup Utility, and then use the arrow keys to navigate to the System Configuration tab. Make sure to enable Action Keys Mode, if it is not enabled already.
NOTE:Your BIOS version and screens might vary.
Turn on or off the backlight
If your notebook computer has a backlit keyboard, press the F5 or F4 (some models) key on the keyboard to turn the light on or off. It might be necessary to press the fn (function) key at the same time.
If the backlight icon 
is not on the F5 key, look for the backlit keyboard key on the row of function keys.
Keep us posted,
If you would like to thank us for our efforts to help you,
Give us a virtual high-five by clicking the 'Thumbs Up' icon below, followed by clicking on the "Accept as solution" on this post,
Have a great day!
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