New Update crushing my Apple Computer

[Zuzana5D09]

Since upgrading to a new update 10.0 a few weeks ago, every time I try to use Lightroom classic, my computer starts flickering, goes black and whole screen starts blinking and then dies. 

I have Mojave and Apple Desktop. 

How can I repaired this? I can not use Lightroom since then. 

[GoldingD]

Take your MAC to an Apple Store for the Apple Techs to diagnose