***Pre-installed or user previously installed antivirus may inhibit the current antivirus, use the mfg removal tools to completely remove them, if they were every on your system.***
Use the mfg removal tools to completely remove them, after running the uninstall in Programs and features see:
https://service.mcafee.com/FAQDocument.aspx?id=TS101331
(MCPR is 1/2 way down the page)
or
Norton Removal tool at:
https://support.norton.com/sp/en/us/home/current/solutions/kb20080710133834EN_EndUserProfile_en_us
For AVG removal see:
http://www.avg.com/us-en/utilities
in addition to the removal tool for your version of AVG.
Use the 'AVG Identity Protection Remover'
List of anti-malware product removal tools
http://answers.microsoft.com/en-us/protect/wiki/mse-protect_start/list-of-anti-malware-product-removal-tools/2bcb53f7-7ab4-4ef9-ab3a-6aebfa322f75
If you are really infected, i suggest some additional tools from bleepingcomputer : http://www.bleepingcomputer.com/download/adwcleaner/ (the other two (2)
suggested tools are on the bottom of the page), like rkill (1), jrt (2), and adwcleaner (3) (run all of them, in that sequence)(i put them on the desktop, and run them from there)(as administrator (right click)). Uninstall adwcleaner, after running it and
the system has rebooted, by opening the program, and choosing the uninstall button, or its quarantined files may set off your antivirus. The other tools from bleepingcomputer can be safely deleted, after running them; they are updated often, so the old versions
are not necessary. After running the tools, if they found anything, you need to reset your browsers to default, then check for any unfamiliar plugin/addins within the browser. then run malwarebytes again.
in a lot of instances, you have to remove the malicious activity one layer at a time, so you may not want to delete the tools after the first run.
Run Malwarebytes (Free):
https://www.malwarebytes.org/mwb-download/
uncheck the box at the end of the install for trial, or convert to free at the end of the trial.
Malwarebyes is a good addition to your antivirus software. Make sure in Malwarebytes the 'Scan for rootkits' box is checked-> Settings-Detection and Protection. Free means manual, so, you have to open it, and run it occasionally.
try geek uninstaller to uninstall programs that are unusual, it works on 32-bit and x64 programs (and it stays free)
http://www.geekuninstaller.com/download
only get the free version.
right click on the program in geek, will let you force uninstall, without running the apps native uninstaller (only use the force method, if the installed program is malicious, or will not uninstall normally).
Try HerdProtect (free), http://www.herdprotect.com/ ,be watchful of false positives, only remove unchecked items at the end (by putting a check in the box), if
they reside in a temp type folder or you are sure about them, remember to run it again in a few hrs(per mfg instructions). I generally uninstall HerdProtect after a few weeks, as it's cache gets large fast.
Manually check for Windows Updates.
Make sure your FileHistory backup is up-to-date (right click start, control panel, FileHistory-Turn it On). (it requires a usb external harddrive (Windows 8/10 will, automatically, create the FileHistory folder on the usb drive, when FileHistory
is turned On); or network harddrive can be used (make a 'FileHistory' folder on the Network Harddrive to connect the app to).... If you keep things in non-standard places, make new Libraries, and add the folders to your custom Libraries. Check to see where
quicken , printer scan-to folders, or any other user installed software is saving data. (You can backup quicken/intuit programs to a OneDrive folder, but do not let database files reside in OneDrive; although, they can be included in Libraries
(and probably already are), they will not backup when open. (some (other) databases can not be restored easily from raw data alone).
see:
http://windows.microsoft.com/en-us/windows-10/show-libraries-in-file-explorer
For additional protection from ransomware see:
https://www.foolishit.com/cryptoprevent-malware-prevention/
use free version only-