My Lightroom isn't opening. At all. Period. It acts like it's going to g to then never does and then I have to use task manager to close out. Any ideas?
You need to turn off the Graphics Processor from Lightroom preferences but since its not opening you can the another below method.
Please Follow the Solution below
C:\Users\YourUserName\AppData\Roaming\Adobe\Lightroom\Preferences (Where AppData is a hidden/system folder so you may need to enter the folder name directly into your Explorer address bar or enable hidden/system folders in Explorer folder view options.)
Once Done save the File
3. Also refer this link and update Graphics Processor if you use AMD card
Let us know if that helps