Almost all text files missing after reboot

[ishist]

After running a malwarebytes full scan it found 4 trojans and asked for a reboot. After restarting I got back to my desktop to find that, apparently, almost every single text file on my entire PC was gone. I found some that had survived but the greater majority of my .txt, .doc, .odt etc were gone. This included tons of config files and .ini files so my PC is a complete shambles. Ironically enough, when I opening my browser (which no longer has any bookmarks and had reverted to default settings) a second browser window popped up loading a random website. Which means My pc was decapitated but the actual trojan/virus/malware/adware had gone unnoticed.

any suggestions? Oh, and my restore points went with the rest, so no backups

[Firefox]

Hi, and Welcome to Malwarebytes!

Please read the following so that you can begin the cleaning process:

As we don't deal with malware removal in the General Malwarebytes' Anti-Malware Forum, you need to start a topic in the Malware Removal forum so a qualified helper can help you fix any malware related problems/infections you may have.

• Please read and follow the directions here, skipping any steps you are unable to complete. Then post a NEW topic here.
  
• After posting your new post, make sure under options, you select Track this topic and choose Immediate Email Notification, so that you're alerted when someone has replied to your post.
  
• One of the expert helpers there will give you one-on-one assistance when one becomes available.
  
• Please refrain from making any further changes to your computer (Install/Uninstall programs, use special fix tools, delete files, edit the registry, etc...) unless advised by a malware removal helper. Doing so can result in system changes which may hinder the attempts by a helper to clean your machine.
  

NOTE: Please DO NOT post back to (bump) your topic within the first 48 hours.

Replying to your own posts changes the post count and helpers are looking for topics with zero replies. If you reply to your own post helpers may think that you're already being helped and thus overlook your post.

• • If there is no reply from any experts after 48 hours, you can reply to the topic, asking for help again.
    Or
    
  • You may send a Private Message to a Moderator asking for assistance.
    

Alternatively, as a paying customer, you can contact the help desk at support@malwarebytes.org or here.

Please be patient, someone will assist you as soon as it is possible.