Hi,

Which version of Klez did avast report exactly ?

try pausing avast resident shield or booting the PC in SafeMode before running any removal Tools

other Klez-Tools are available from Symantec, bitdefender, mcafee/Stinger, F-secure etc…

Also read the Infos on your Klez-variant on avast’s virusinfo pages or the virusinfo-pages of the above sites…
And use the board search here :wink: