Hello Bleeping Computer Forums,
I have a 60 GB, important .7z archive. It was created with 7-Zip's default compression settings on my Windows 7 64-bit host and saved to a non-OS hard drive. At the time, the file was normal. Almost a week ago, I reinstalled Windows. Today I discovered that this one file will not interact with me. When I right-click and select Properties, nothing appears (I eventually restarted explorer.exe in surprise). When I try to open it with 7-Zip, the Open File window hangs on 0% progress. When I try to copy it, Windows gets stuck on calculating. When I scan it with Malwarebytes Anti-Malware (about 2 minutes), no progress or contents are indicated. After interacting with it and attempting to gracefully reboot, Windows hangs on Logging out... and I have to hard reset. I was able to make a copy of the file using an Ubuntu Live CD. However, the distro does not come with 7-Zip, so I could not extract the archive. The copy I made with Ubuntu suffers the same problems in Windows.
I have never seen this kind of behavior before. I am unsure if it is corrupted nor what tools to employ. I am very scared at the moment, as this file (and its backup) are affected. Thank you very much for reading and in advance for discussion!
Edited by hamluis, 25 July 2015 - 04:42 PM.
Moved from Crashes/BSOD to Win 7 - Hamluis.