|"Do you have an idea about what I can do? "|
The blurriness indicates your display assembly is damaged. There is nothing you can do to fix the problem other than replace the display assembly.
Have you, or is it possible anyone else has.....
- dropped this laptop, or dropped anything on it, or subjected it to a physical jolt, or bent the lid the display is in ?
- spilled liquid on it, or exposed it to liquid such as rain, or sprayed it with liquid ?
Has there been a power failure even that happened when the AC adapter was plugged into it ?
If any of those things apply, replacing the display assembly is NOT covered by the laptop's warranty, unless you have already purchased additional warranty coverage that includes damage caused by accidents.
If none of those things were done to, it would qualify for free warranty replacement of the display assembly, if the darker side of the display was not blurry - some laptops have two backlights.