The latest avast update freezes my laptop

Avast Free Antivirus / Premium Security
1

I updated avast to the 2015 version and my laptop works for about 30 minutes until it freezes and I did a scan and it says the part of the scan is corrupted. What should I do to try and fix this? Thanks

2
  • Which Avast…? (Free/Pro/IS/Premier)
  • Which version…?
  • OS…? (32/64 Bit…? - which SP…?)
  • Other security related software installed…?
  • Which AV(s) did you use before Avast…?