Lol.. this is so familiar. I will say just this; Not being able to open the file is NOT your current problem, but more like the fact your computer has a malware or how more people would refer to it a virus. Do you have an antivirus? Sure getting an already edited file might be a solution, but as you realize, your system is getting worse and worse. It is up to you to listen to me or not, but I will try to help you either way.
Normally I would tell you to first run the apps bellow, because it is always better to make sure there are no malware in a system before trying to fix it. If you do not want to, you can use Microsoft's automatic
File and Folder diagnostic tool that will look at your system and fix the problem you get when trying to open files like that. I know this works on Windows 7 but not 10. (not sure about
.
Keep in mind, that it might not be a malware, but making sure is always better than scratching it off as "it is not that bad". Get and run the follow apps in that order:
RKill - Get the normal one. iexplorer.exe and rkill.com are the exact same file, but named different, to trick your pc in case it does not want to run the normal exe. This one will kill whatever malware is running in the background and after doing so it will let you run other software without the malware stopping them.
TDSSKiller - It will look for some specific bad malware. Its a software by Kspersky and really good.
AdwCleaner - Its like Malwarebytes Antimalware, but does not need installation.
Junkware Removal Tool - Is an extra cleaner for malware.
After using all these, hopefully you will not have any more problems opening files and your computer.
If you want to be thorough, after the system is stable, install
Malwarebytes Antimalware Free and let it do a full system scan.