Display Problem

There will be a very limited number of upgrade options -- notebooks are limited to those screens they're coded to support when they're built.

If you need better color calibration or higher resolution, you'd be far better off with an external monitor, and even then you need to realize that depending on what software you're running, you likely will run into limitations based on the nature of an extreme budget system like this one.  The system simply won't do well driving a high resolution color display even if that's possible (it won't be unless you have a USB-C video port in it).