Not enough information, and there has never been a similar guide for ME-3 to what may be needed, so if you want your fellow game players here to offer suggestions, you can follow the ME-2 guide (link to be added). Meanwhile, you have made no mention of discussing this with any Game Adviser, or reviewing any of the collected FAQs where those people can be found. They are on EA's Help Center. AHQ is self-help, and so new that there just aren't so very many resident gamers here.
Here's the guide to reporting:
http://answers.ea.com/t5/Mass-Effect-2/How-to-deal-with-PC-version-problems-and-tech-the-report-form-to/m-p/589920#U589920