Probably virus. Help needed.

Nothing horrible yet, but tried to download something and now Windows Defender isn't working right. 

Help! 

• Please download Farbar Recovery Scan Tool (x32) or Farbar Recovery Scan Tool (x64) and save the file to your Desktop.
• Note: Download and run the version compatible with your system (32 or 64-bit). Download both if you're unsure; only one will run.
• Right-Click FRST.exe / FRST64.exe and select [external image: AVOiBNU.jpg]Run as administrator to run the programme.
• Click Yes to the disclaimer.
• Ensure the Addition.txt box is checked.
• Click the Scan button and let the programme run.
• Upon completion, click OK, then OK on the Addition.txt pop up screen.
• Two logs (FRST.txt & Addition.txt) will now be open on your Desktop. Copy the contents of both logs and paste in your next reply.
  
  

• Right-click on the FRST executable and select [external image: Spcusrh.png]Run as Administrator (for Windows Vista, 7, 8, 8.1 and 10 users)
• Copy/paste the following inside the text area:
  

  Start::
  CMD: bcdedit.exe /set {bootmgr} displaybootmenu yes
  CMD: bcdedit.exe /set {default} recoveryenabled yes
  End::
  

• Click on the Fix button
  [external image: NYA5Cbr.png]
• On completion, a message will come up saying that the fix has been completed and it'll open a log in Notepad
• Copy and paste its content in your next reply

I did run the MBAR scan and it found 15 malware items and cleaned it but now I can't find the log.

I think this is it … 

And this … 

• Open mbam-setup.x.x.xxxx.exe (x represents the version #) and follow the prompts to install the programme.
• Windows Vista, Windows 7 , 8, 8.1 and 10 : Right click and select "Run as Administrator"
• After the installation IS complete let it update if it asks.
• Under SETTINGS…..PROTECTION tick Scan for rootkits and make sure AUTOMATIC QUARANTINE is on.
• Then go to the Dashboard and click on SCAN NOW
• If threats are detected, click the Apply Actions button. You will now be prompted to reboot. Click Yes.
  Upon completion of the scan (or after the reboot), click the Reports tab.
  Double-click the Scan Log.
  At the bottom click Export and choose Text file.
  
  Save the file to your desktop and include its content in your next reply.
  
  You can access the logs by going in the "Reports" tab, clicking on the latest "Scan" entry (the one with detections), then clicking on the "Export" button in the bottom-left corner and select "Copy to clipboard". After that, all you have to do is paste it here
• Then click on POST
• Exit Malwarebytes

• Download the right version of RogueKiller for your Windows version (32 or 64-bit)
• Once done, move the executable file to your Desktop, right-click on it and select [external image: Spcusrh.png]Run as Administrator (for Windows Vista, 7, 8, 8.1 and 10 users)
• Click on the Start Scan button in the right panel, which will bring you to another tab, and click on it again (this time it'll be in the bottom right corner)
• Wait for the scan to complete
• On completion, the results will be displayed
• Check every single entry (threat found), and click on the Remove Selected button
• On completion, the results will be displayed. Click on the Open Report button in the bottom left corner, followed by the Open TXT button (also in the bottom left corner)
• This will open the report in Notepad. Copy/paste its content in your next reply

• Right-Click FRST.exe / FRST64.exe and select [external image: AVOiBNU.jpg]Run as administrator to run the programme.
• Click Yes to the disclaimer.
• Ensure the Addition.txt box is checked.
• Click the Scan button and let the programme run.
• Upon completion, click OK, then OK on the Addition.txt pop up screen.
• Two logs (FRST.txt & Addition.txt) will now be open on your Desktop. Copy the contents of both logs and paste in your next reply.
  
  please post these 4 logs when finished.