Updating the BIOS isn't as hard as it used to be, when one had go create a
bootable floppy. However it pays to read very carefully the instructions on
updating from the mfg of the computer or motherboard. Some say that it
should only be done with the computer hooked to a battery backup power
source. That seems to me to be overkill, but I'd never do it during a
thunderstorm.
In Dec 06 I bought a Gateway laptop loaded with XP that was Vista compatible
and included a free upgrade to Vista after it was released. Having visited
Gateway's download site for my model, I was aware that there was a BIOS
upgrade for Vista, and I used this before installing Vista. Interestingly,
nowhere in the written instructions that came with the Vista upgrade kit was
the BIOS upgrade mentioned, even though the website specifically stated that
it was to make the computer compatible with Vista.
So, I wonder if some of those who have had trouble with their computers
after upgrading from XP to Vista should go back to their mfg's site to see
if a BIOS upgrade is available.