Tried all the suggestions with deleting preferences, etc. and nothing works.
Unless you tell us what "etc." consisted of, we can't really offer suggestions in an intelligent way.
And tell us the full version number for ID and your OS.
So did you try opening on a different computer?
There is also a free tool for Windows at INDDRecovery — a program for restoring corrupted InDesign documents, and a script to blind-export the file to IDML at Adobe Community: InDesign 6 is crashing when attempting to open a particular document. All others are opening OK.
Sanyam Talwar has been asking for corrupt files for study, and repairing them when possible. see Adobe Corrupt Docs email
There are multiple factors both internal and external to InDesign application that can lead to document corruption. However, I can take a look and see if the file can be repaired. Please email your InDesign file to email@example.com and I will take a look at the document.
If the file is larger than 10 Mb, you can zip (and password protect) the file and upload to Creative Cloud account (or Dropbox) and send us the document link.