I have lost all folders in my OUTLOOK Mail account.

I have somehow deleted my personal folders in my inbox. When I restore a .pst file from previous backup, I have everything such as inbox, deleted items, sent items, etc. However, the personal folders I created within inbox are missing. I am so confused. They have had to been backed up because I can go back and recover deleted emails from years ago, yet I still cannot find my very important folders that I created within my inbox. This pertains to the discussion as I am using Outlook 2013 and I was able to find them when my hard drive failed a year ago, but as of two days ago, I cannot find them. Is there something hiding them? I have used scanpst.exe as well but to no avail.

Thanks Ranger, but I have tried that. I can repair a .pst file, but I cannot get the folders back. I don't have recovered folders or anything like that show up. The strange thing is that if I go to pst files from say 3 years ago, all of my default folders show up such as inbox and deleted items, sent items, etc. with all of the 3 year old emails. Its just that I had created personal folders within my inbox many years ago and it is those folders that I cannot access. I am thinking that it might be a file path issue or that my folders are hiding somewhere and I cannot figure out how to get to them. They aren't archived as I cannot find any archive.pst folder. I'll keep working on it and any help is appreciated.