There are a few ways to ID your BIOS company. There are really only 3 (AMI, Award and Phoenix).
Most boards report the BIOS company during POST (The screen that shows information when you first power on your PC).
If you don't remember what company it was, look on the BIOS chip itself. There is a removable sticker. You will remove it anyway to ID the type of chip. On the removeable sticker it will give you the BIOS company name.
All this information is important if you want us to replace, update, upgrade your BIOS chip ( eeprom).