I never format. Never.
The only time I re-install windows is when the 120-day evaluation expires.
Or when my harddrive dies.
Although...
Last week, I installed QNX in a primary partition behind win2k in a fat32 partition. QNX installed it's own bootloader, which was fine. Anyway I got bored of that, and decided to revert back to the win2k bootloader. So. I go to Win2k Disk management. I select the win2k partition, and right click "set active". Imediately all the partitions on the disk disapear from the disk bar graph thing. I click on the bar to select properties, but the program crashes, and bombs out.
I think oh oh. Better hold in those bowels. I goto my computer... Blank, nothing nada (drives that is) cdrom was at least still there. Me thinks it's time to turn of the power.
Insert my magic super douper bootable "save my computer CD" which loads up dos with a sh1t load of utils, PQ, etc... I go through my utils. Guess what. The drive is completey blank. No MBR, no boot records, no partitions, no fat tables, nothing. Everything gone. Weird eh?
Just as well I have backups automatically copied to my server.
Re-install just because you have changed hardware? That is just insane! Re-install just to change drivers????????
lol some people have way to much time!
Man, I have changed my entire pc's hardware and not re-installed and still have the same level of performance.