I have been using a document for 2 years now, and a couple of days ago, I had gotten my entire laptop updated to Windows 8.1. Since then, all my documents have turned into random symbols and characters. I have tried downloading the adobe acrobat reader DC but it says that it's only for .pdf files so it won't work. I have also tried using Word but to no avail. Please help me get my document back to normal comprehensible writing. Anything helps.
System Configuration: Windows / Chrome 81.0.4044.129