10.0 or 10.1?
using cds or dvd? (also, live, eval, or install dvd?)
and how long ago did you download it?
(the reason i ask is that 10.1 had a problem with YaST that required a reissue, but in any case, this doesn't sound like your problem)
and where exactly is it crashing?
once the install has finished, it'll say "rebooting in 10 seconds" or whatever, as you've seen. once it gets to this point, the hard-disk is configured enough to boot on its own, so nothing after this point matters (ie, if this is where it's crashing, just hit the big Reset button).
The next time you boot your computer, boot from the hard-disk you installed to, not the cd/dvd. if you installed from a dvd, then you just have to configure your system at this point. if using the 5 cds, you have to sit through more package installations, then configuration. if it's not getting to this stage, check your bios to make sure you're booting from the right hard disk.
if neither of these, please post more info about your system...