I like your signature
So, don't give up!As Keet I'm also not a Windows fan but I know some basic things about how the computers works.
My suggestion:
1. To preserve the current installation with all add-ons:
Rename the eTeks folder to eTeksBak(or whatever)
2. Install the official version 7.5 from this site(not from MS store)
3. Test it WITHOUT any furniture, texture or plugins.(try 32 or 64bit)
4. Go to your eTeksBak\Sweet Home 3D folder and copy the furniture and texture folders to your new installation
5. For the plugins you will have to test it one-by-one to see which one break your program and delete it.
That's what my unique neuron could produce
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A computer program does what you tell it to do, not what you want it to do. Murphy's Law
When all else fails, read the instructions. Murphy's Law
If you don't like "AS IS", DIY. Dorin's law
