I used VirusTotal to scan file SECOH-QAD.dll it out a notice dangerous this ???

thank you

If you Win10 Reset (remove everything), you dont need to worry about removing anything beforehand, it will all be removed on reset.

Registry

Thank you.

Before when reinstalling Windows for me ask?

I use Ccleaner, Revo Uninstaller to remove a the software out the machine but can not removed it:

"A file error occurred while trying to remove the program"

Please would you please help

This is Registry its :

Software GoldWave

Key Name:          HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\GoldWave v6.21

Class Name:        <NO CLASS>

Last Write Time:   8/6/2016 - 4:24 PM

Value 0

  Name:            DisplayName

  Type:            REG_SZ

  Data:            GoldWave v6.21

Value 1

  Name:            DisplayVersion

  Type:            REG_SZ

  Data:            6.21

Value 2

  Name:            UninstallString

  Type:            REG_SZ

  Data:            "C:\Program Files\GoldWave\unstall.exe" "GoldWave v6.21" "C:\Program Files\GoldWave\unstall.log"

Value 3

  Name:            HelpLink

  Type:            REG_SZ

  Data:            http://www.goldwave.com

Value 4

  Name:            Publisher

  Type:            REG_SZ

  Data:            GoldWave Inc.

Value 5

  Name:            DisplayIcon

  Type:            REG_SZ

  Data:            C:\Program Files\GoldWave\unstall.exe

Value 6

  Name:            EstimatedSize

  Type:            REG_DWORD

  Data:            0xc350

"reinstall Windows clean directly on hard drive yes good ?" and/or "Reset this PC" -> yes