how to resolve back light problems in lenovo ideapad

[mnwakanma]

How can I get my screen brighter? I have done everything I know. In the past I called lenovo and they corrected it remotely and warned me that they would not do it again as my warranty was expiring. But I continue to have the problem. The system is lenovo ideapad. Please help. Thanks

 

[Paul NZ]

Replace the monitor