Major game issues making my game unplayable

[Smiler Entertainment]

Hello.

My game has been having very many problems for the past year or so.

It started with the game crashing every time I started it up. I uninstalled my mods, which didn't help. So I uninstalled and reinstalled, which helped.

Sorta...

Now I'm getting the following;

Words replaced by purple boxes.
No Kerbal Space Center, just the KSC lights, and the sky background.
No Kerbals on the main screen.
No VAB, or Hangar interiors. Just lights and the Kerbals walking around.
No pictures of ship/plane parts in the list.

I haven't tried to fly any of my past projects. But I assume that's broken too.

Is there anything I can try to fix this before uninstalling and reinstalling?

[JPLRepo]

Need a bit more info here..
How do you install? did you buy via Steam?
What machine are you running the game on? What Operating System? Some specs? Does it meet the minimum specs?
Sounds like graphics issues. What Graphics card and have you updated the latest drivers for it?
After that, and assuming you have minimum spec PC I'd reinstall the game and report back with the above info.