All my files for pdf, MS Office, and pictures (everything except videos) now have an added file extension of .daapomh. They will not open and I get a corrupted message. Whatever did this also erased all restore points (or at least it says I have none when I open system restore). I am facing a catastrophic loss of anything not backed up--which is quite a lot of files. I am afraid to simply back up the corrupt files and perform a low-level format, then do a clean install because that may mean not being able to recover any of the files. Has anyone heard of this issue? Google searched turn up nothing for .daapomh issues.