2nd Hand Laptop, how to find out which drivers

I have been given a 2nd hand Toshiba Dynabook laptop. Model no. seems to be EX1/524CDE, and I'm pretty sure it's from Japan.

Now I can see it has a Windows XP sticker on it, but apparently Vista is on here.

It won't start. It gets as far as the black setup screen which gives the option for Normal Windows, Safe Modes, etc. and goes in a circle up to that point only.

What I would like to do is get it working again using XP (not Vista), and also need to figure out which drivers it will need.

My worry is that since it's from Japan, it may mean going to some all-Japanese website or customer service site to get that information again. I hope not. Actualy after doing a good bit of Googling, I can't find anything remotely helpful. I don't see any info at all on this model in English.

I don't have any of the specs for it, so no idea which video card, sound card, etc. that it has on it.

Am I looking at a hell of a lot of work to get this thing up and running?

Any help or information on this problem would be very appreciated.

Thanks