Please explain the steps [all of them] which you took [unsuccessfully]...
e.g. Download[RBZ?]/Install-using.../ etc
Note that if you didn't install SketchUp properly it can lead to weird issues - perhaps yours ?
To try and fix that...
Close SketchUp.
Find its installer exe file - probably in your Downloads folder ?
Select the exe file.
Right-click > Context-menu >
"Run as administrator"
When prompted choose "Repair"
[If it's a fresh installation choose "Install"]
Restart SketchUp, and test...
If it's still flaky, then you can try to repeat the above steps, but this time choose "Uninstall".
Then immediately repeat the steps and choose "Install".
Restart, retest.
Installing SketchUp in any other way can cause unpredictable problems.
Never double-click an installer's exe file, or choose to "Run" it.
Even if you [as the day-to-day user] have 'admin' powers it is not the same as using the "Run as administrator" tool...
Also, when installing any application, never choose to login as the system's administrator [ as apposed to a user-who-has-admin-powers, which is OK ! ]