Windows 10. I tried to start Firefox multiple times, but the browser didn't respond. I couldn't find any activity in taskbar and restarting the pc didn't help, so I deinstalled Firefox and then installed it again. However, now I cannot find my old bookmarks. My whole history is gone. I went to menu > help > application basics > open map > bookmarks backup but that file has been rewritten and is empty. I had gathered and organized a lot of bookmarks, and I really hope I did not lose them forever, but I'm not sure how to proceed from here. Please help?