I downloaded the latest free version of avast. I did a full system scan. Some viruses were found, none were system files, i deleted them. I set it up to do a boot time scan and restarted the computer. It will not restart. I cannot access safe mode or use the recovery console. "last known good configuration" does not work. the computer reboots itself before any of these can finish loading. I am looking for some suggestions here. I had no such problems previous to installing avast.