Blue screen crash everytime PC loads after upgrade from Pro to Internet Security

Avast Free Antivirus / Premium Security
1

Hi,

I was running fine on Avast Pro on Windows 7. This is due to expire end of this month so I upgraded to Avast Internet Security. Now my PC has a blue screen crash every time it loads. I went in to safe mode and did system restore to back before upgrade. System runs, but anti virus is stuck in expired mode. So tried upgrade again. Blue screen crash continuously. I eventually had to go into safe mode and uninstall antivirus completely, reload and can only load the Avast free.

Attached Blue Screen. Any help would be appreciated as I now have a product I can’t use.

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