Answer to "Which way does the fan blow?"it should blow inside out(blowing it out)
Answer to "Toshiba P755-S5215 2 right side USB ports dont work. Can I fix it?"You have to take your laptop apart and resolder or replace those non-functioning usb ports. This might not be an easy task. Instead you might get an usb hub and plug it to a working usb port and get additional usb ports.
Answer to "Why my screen reads no bootable device"Your hard drive might be dead.