I just downgraded a Toshiba Satellite model A135-S4527 from Windows Vista
to XP. And having a hard time trying to figure out which motherboard or chipset
drivers to install? It has Intel dual core processor inside. Can anyone help? Thanks
It depends on the chipset that Toshiba used; not the processor. If you search for that model on Toshiba's website, you'll find a thread where someone does exactly that.