CorelDraw 2018 keeps crashing when opening a file

I have tried renaming the Font Folder, I have reset Corel to factory, (really annoying) and now just before the file opens I get the message, 'This file originated from another program", then it tries to open the file and the whole program just shuts. All my files originated in Corel X8 or 2018. The only thing that has changed was a bloody auto bios update by Dell. What could this have changed. The computer is a Dell i5-6400 cpu @ 2.7, 8gb of ram, 64 bit windows10. I have a NVIDA GTX 1050Ti video card.  

I am going to miss a deadline if I can't get this to work soon. 

Thanks to all who can help