Do a full forum search…
But look at these [there are many…]:
White screen and and no possibility to design
GPU Intel HD 520 vs AMD Radeon R7 M360 2GB - #3 by DanRathbun
Model Disappeared, but "Scenes" Show Content - #4 by DaveR
Also note the requirement about installing SketchUp by selecting its installer's exe file's icon, right-click and choosing "Run as administrator" - because it's already installed, choose "Repair" when it's offered...