Please go to the Preferences of Lightroom from the Library Module.
Then go to the Performance Tab, uncheck the option for " Use Graphic Processor"
Restart Lightroom, it should help you .
Please let us know if it helps.
When I try to do this, it give me the "Not responding" error as well. I have already tried the whole uninstall and reinstall too. When I first got it probably a month ago, it worked great, now I constantly have this issue.
Which computer are you working on Windows or Mac ?
If it is Windows, please Click on Start and then type Run and hit enter.
In the Run Window , type devmgmt.msc and hit enter, expand Display Adapters and right click on the Graphic Card and disable it.
Once the Graphic Card is disabled, open Lightroom , go to the Preferences, uncheck the option for "Use Graphic Processor"
Then close Lightroom, and enable the Graphic Card.
Please reopen Lightroom and see if it works.
And if it is a Mac please let me know.
Looks like it worked. Thank you VERY much. I have some photo shoots coming up and really needed the editing program :-)