this is not motherboard model check link below to find motherboard model https://bios-fix.com/index.php?threads/how-to-find-motherboard-model.21053/#post-26873
https://bios-fix.com/index.php?threads/dns_0119111_6-71-m77c0-do4.9198/#post-10964 https://bios-fix.com/index.php?threads/6-71-m77c0-bios.33355/#post-41191 https://bios-fix.com/index.php?threads/6-71-m77c0-bios.33355/#post-41191