New infection...I think.

May 10, 2018
Windows 8.1
I downloaded a dodgy file which installed a few games automatically on the computer.
Have run CCleaner and removed any new files but computer is ''sloppy'' and I know there is something infected but unsure what.
System restore won't work, i have tried maybe a dozen times, closed all anti-virus etc, still won't restore.
Now I have lost all access to network computers and external drives etc, not sure if this has anything to do with it but never had any probs before.
Please help.
Operating System
Windows 8
Are you using a 32-bit or 64-bit operating system?
64-bit (x64)
Infection date and initial symptoms
within the last fortnight
Current issues and symptoms
see above
Steps taken in order to remove the infection
see above
Logs added to Help Request
FRST.txt, Addition.txt