some weeks ago avira antivir found the trojan TR/VB.aqt.58 and it said it deleted it. but now my computer keeps freezing during the startup (sometimes it works though), sometimes i get a note saying that windows couldn't be loaded due to a hardware or software failure and i get some options (insert windows installation disc/ run safe mode/ start normal mode if the power went off during startup). i attached the logs from the 8 steps and the antivir log. please help. oh, um, i'm using windows vista.