Hi, I have the same problem. Nod32 found a Trojan and I deleted it. Not a wise move because to delete it I had to turn off avast. Now it won't restart. Think it was the dll file!!! I have tried going to the control panel and repairing it...updating it, and even did a system restore. Nothing works. I deleted Avast and cleaned it with the cleaning tool. Re downloaded it and this error message came up. "This application has failed to start because aswCmnOS.dll was not found. Re-installing the application may fix this problem" .......it didn't. When I shut down the pc now it comes up with a message saying that the A drive door is open do you still want to continue. Think I have messed something up but don't know what to do next. If anyone can give me some easy to understand advice I would really appreciate it.
Thankyou