Will updating BIOS on my comp. wreck it?

The general rule is "If it ain't broke, don't fix it" If however,you are having issues and the bios update addresses those then a bios update is necessary. The most,most,most important thing is to insure that the bios is the correct version for the board. Also, some flash utilities will allow you to back up the current bios should something go wrong. Best of luck .....