I just recieved a HP dv6500 laptop with windows vista the previous owner gave it to me because it quit working. She said she was deleting all her data off of it and it just quit now im trying to get it to run but it wont boot up. It starts to boot then goes to a blank screen with "the file is possibly corrrupt the file header checksum does not match the computed checksum" I've tried to boot in safe mode but have not had any success. Also there wasn't any back up or recovery disc with it. I hope there's a fix for this and someone on here can and will help.