My computer is like from 2002 and has windows xp. I recently have come across the FBI virus where it locks your screen and asks for $300 but I know it's fake. I've looked up videos and troubleshooted this problem on tons of websites but none have been able to help. When restart my computer normally and log in it instantly pops up. When I go to bios and do safe mode it won't even let me log in. When I go to safe mode with cmd prompt it won't let me log in. When I go to safe mode with network it lets me log in but immediately windows starts to shut down. Please help I have so much work and files on this computer that I need and can't access. Thanks!