Hi,

I am using Windows 10 Pro. Lenovo Ideapad Y700 - 64 bit.
I had Avast Internet Security installed and a couple weeks ago I started having these unexpected crashes.
At some point it systematically crashed whenever I logged into the PC and only after disabling Avast after booting in Safe Mode was I able to login.
After that I could not activate the Avast services anymore so I had to clean the installation.
I tried reinstalling the free version and also version of internet security 17-5-3559_fr_380314 but both have the same problem.
I cannot reach the end of installation without getting the error of Bad Pool Caller.

I had no other antivirus before Avast. It was working normally on that PC for more than one year now.
For the moment I have installed Malewarebytes as Avast is unusable.

Which Avast…? (Free/Pro/IS/Premier)

  • Which version…?
  • OS…? (32/64 Bit…? - which SP/Build…?)
  • Other security related software installed…?
  • Which AV(s) did you use before Avast…?