BIOS Flashing for Beginners (as far as I know)
"Flashing" the BIOS means you're writing new information to it. The BIOS chip on Most motherboards is an EEPROM (Electrically Erasable Programmable ROM) chip.
When you flash a BIOS, firstly the old BIOS information gets zapped away or electronically wiped. Then the new BIOS code is written to it.
The new BIOS code might include support for new CPUs, fixes from the old BIOS, include extra previously hidden (un-needed) features. It can make boards run more stabler. On certain Abit boards, flashing the BIOS can even enable extra voltage to be used to get the CPU to run stabler in a OC situation.
The Chernobyl (CIH) Virus does something similar to flashing the BIOS, except it's not kind enough to write anything new.
P.S. Just found this site at the bottom of another post here. Check out:
for info about BIOSs (bear in mind that they're trying to get you worried enough to get a spare BIOS, probly)