how do I purge Taplika and Vosteran?

meinum7,

Please use the Farbar Recovery Scan Tool:
Download: Farbar Recovery Scan Tool Download
Select the version that applies to your system: 64-bit
Save it to your Desktop.

Double-click the downloaded file to run it.
When the tool opens click Yes to the disclaimer.

Press the Scan button.

The tool makes a log (FRST.txt) in the same directory from which the tool is run (Desktop).
Please provide the FRST.txt in your reply.

The first time the tool is run, it also makes another log: Addition.txt
Also post the Addition.txt in your reply.

That is a false positive. FRST is a reputable and virus free program.

Please temporarily disable your AV program.
Info on how to disable your security applications > How To Temporarily Disable Your Anti-virus, Firewall And Anti-malware Programs - Security Mini-Guides

Now, try downloading and using FRST again.

Absurd, no. The key word is temporarily.

If you do not wish to do so, then, allow AVG to run FRST.