These sorts of problems are common with integrated graphics, especially Intel graphics. Commonly it’s Windows updates that include broken drivers but sometimes Dell pushes them, too. (I’d have suggested Dell if I’d know that was the brand of your computer). This is part of why integrated graphics are not recommended for SketchUp.
It’s good that you have it working now. You might want to save a copy of the working drivers as a fall back. It is likely this problem will come up again when you get an update from Dell or Microsoft. Rolling the graphics drivers back to this version may be the fix.
You also might want to save your Lira and get a computer with a decent graphics card. Historically Nvidia graphics, esp. GTX series, have proven to be the most dependable.