Hi,

this can have loads of reasons, and often happens with low ressources…(“yuck”)
this repeats after reboots ?
Does it also happen in SafeMode ?
What gives a thorough scan with avast (archiv-scan enabled) in SafeMode ?

try google:
Web-Link

have you changed anythign in the default settings of avast… ?
maybe increased the scanning sensivity ?

Are all WindowsUpdates applied ? Please CHECK: www.windowsupdate.com

What avast version/VPS are you using. ?

you might want to clean up your Win: clear Temp.Int.files, Temp.Folders, defrag & scandisk… etc…
and post a hijackthis-Log for diagnosis: http://hjt.klaffke.de/de
:wink: