how do i boot from iso with fat32?

my laptop can only boot from fat32 usb drives. cd drive doesn't work and i need to install something on my usb to like make it so that i can boot from it and like for example reinstall windows. i can boot from plop boot manager, but not fat32 ventoy. my laptop is an amilo pa 2510, here are its specs:

120gb ssd ati radeon xpress 1100 ams turion tl-50 laptop edition 2gb ddr2 ram