Manually remove it (new folder.exe Fix)

Go to:- Start -Run- type Regedit & click ok
Delete File named. "svichossst.exe"

[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System] “@”=

[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run] “Yahoo Messengger”=

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] “Shell”=”Explorer.exe “