Avast placed malware in chest - now dll missing everywhere

Hi All,

Any help greatly appreciated...

I'm running AVAST 4.8 / have run spybot search and destroy / Malware Bytes /SAS

Virus seems to be removed - boot time scan from AVAST picks up nothing

but

Many of my programmes and proccesses are now looking for the netdtoh.dll that avast removed

I have searched for netdtoh.dll on the internet and can find no info so assume it is a virus

however

now several programs / processes say that cannot run on startup because netdtoh.dll is missing

winlogon.exe, services.exe, lscass.exe PRE Login box

explorer.exe, rundll32.exe, ashDisp.exe + everything else that runs on start up POST login box

If I try to run any programs they say the can't locate the netdtoh.dll component but then start anyway - apart from firefox which just won't start at all even after reinstall

do I need to stop the computer looking for this file some how?

Thanks

any help would be very greatly appreciated!


PPS firefox and itunes not working but other programs ok

PPPS netdtoh.dll was in the system32 folder - said something about system32 malware GEN

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