Here is the "How to flash the BIOS" page from MSI that will hopefully help get you started:
http://us.msi.com/service/biosupdate/It appears that there is a V1 and V2 of that particular motherboard and I can't offer much in the way of telling which you have, sorry.
Flashing a BIOS incorrectly can cause problems or kill a MB. Even on the page linked above, it pays "don't flash if everything is working okay." Obviously, you're trying to solve an issue, but just be very careful and double-check what you are flashing, and how before you try. Usually BIOS flashing programs I have used in the past will warn you if you are trying to apply an update that does not fit your hardware, but I can't say that will happen in all cases.
Good luck!