Bios flashing within Windows using programs such as @BIOS is alot safer then it used to be, it's pretty solid these days....but, i always use the embedded BIOS system, Floppy is dead now...QFlash has been using USB drives for over a year now...it's very solid and fast.

I never use Floppy, a USB drive these days is very safe and consistent, i've flashed many times.