Send the file to your VAR. My guess is it's most likely corrupted. If you were able to open it recently, I suggest rolling it back to a previous version to see if it fixes your problem.
Here's a few way to trouble shoot:
Have you tried opening it with the factory reset setting that SolidWorks RX offers you? I read that you tried openGL but maybe one of your setting is causing SolidWorks to crash.
Have you tried opening it in lightweight mode? If you are already opening in lightweight, have you tried opening in resolved? I've had drawings crash when opening because they would open the assemblies in lightweight mode.
Do you have a lot of messages checked to not show again? I've had crashes because of certain messages being checked to not show again
If you end up being able to open in either resolved or lightweight mode, it is generally a section or detail view that causes crashing for me so try removing some and saving as until you find the culprit.
Hope this helps
Thank you for the response. I've decided to make a new drawing because waiting for the VAR diagnosis might take a while, and might cost something. I have noticed that the problem might have come from having too many detailed views. This seems to slow down my computer and eventually comes to a crash.
Thanks again, your advice was helpful.