if you can not recover from a USB flash drive you may need to reflash your BIOS with an SPI programmer as i had to do for my P67A-GD55 (BlackCatUSB which is about $35 on ebay)
https://forum-en.msi.com/index.php?topic=256035.0 here is the thread, look a...
https://forum-en.msi.com/index.php?topic=256035.0 here is the thread, look a...