I recently had been receiving prompts to update my avast software because it was running out. Today it popped up during some netflix viewing. So in frustration I let it update. Shortly after the bar reached 100% I got a BSOD. Since then I have not been able to boot my PC and the repair tool does not help me either, nor does System Restore. So searching through the logs I found this as the "root", D:\Windows\system32\DRIVERS\aswNDis.sys
Stupidly of me I have lost my OS Disc so I seem to be out of luck.
Any help is appreciated.