Origin crashes on Startup

Applications crashing on startup has been a thing since the dawn of computers. It has been crashing since 2011 since that's when the application was released which is true for all other applications as well.

Try manually uninstalling Origin:

https://help.ea.com/en-in/help/origin/origin/manually-uninstalling-origin/

Then:

Check Hard Drive For Errors And Corrupted Files

All files can become damaged. This is just the nature of hard drives. Do this for all hard drives that has Windows and the game installed.

1. Go to "This PC" in Windows and right click the hard drive and click "properties"
   
2. Go to "Tools" and and press "Check"
   
3. Click "Scan Drive" and let it scan for errors.
4. If it finds errors let the program fix them
   (If there are errors it could mean nothing, but it can also suggest that it might be time to format your computer and/or replace the hard drive)
5. Reboot your computer
6. Run the scan again
7. Keep repeating step 3-5 until no errors are found.

Then install Origin again.