aswMBR!!!!

I keep trying to run aswmbr and it stops working in windows seven sixty four bit newest version. Ill try to run it in safe mode next I think I have tried before and it crashed there to. I hope this is in the right section. I got a popup add saying your computer is infected with virus wthirtytwo.vrbat a computer generated voice said I was infected and told me to call a number I think its just a scam I didnt call the number I decided to run aswmbr to see if Im infected aswmbr keeps crashing saying aswmbr has stopped working.

For help with malware removal/check > http://forum.avast.com/index.php?topic=53253.0