Cannot work on a raster - becomes blurried when I change zoom

Hello Guys,

 

I'm an owner of a free draft sight license and I have some problems with it on my private computer I recently upgraded from windows 8 to windows 10. I wanted to practice since I'm changing work, but unfortunately when I enter a raster image (100 dpi jpg) it becomes blurried/greyed out whenever I touch the mouse wheel. Weird enough it comes back if I just resize the image a bit, but then it's all over again whenever I try to adjust my zoom/center of view. It's impossible to use DS64 for now.

 

What can I do? I reinstalled the program to the updated SP3 version but it didn't help much. Maybe something is wrong with some system library or whatever (cannot even pretend to know the nomenclature) since I cannot properly uninstall my Autocad 2014 trial either. Both programs were installed under Windows 8. 

 

With Regards,

Thomas