You uninstalled any old antivirus and cleaned registry.
but still can't install kaspersky... try this
- In the bottom left corner of the screen click the Start button.
- Next perform the following actions:
- For users of Windows XP:
- In the Start menu select Run.
- For users of Windows XP:
- For users of Windows Vista/7:
- In the Start menu select All Programs > Accessories > Run.
- In the Run window in the Open field
- enter <cd-rom>:\install\setup.exe /pSKIPPRODUCTCHECK=1
- Click on the OK button.
** The "setup.exe" part can be different. Look in the "D:\install " folder first, if it says something other than setup.exe replace it with what you see there