Thank you for your question.
You will need to obtain a USB flash drive and download necessary drivers from Toshiba website below. Local library near you should have internet access for the public at no charge; else need internet access elsewhere.
Toshiba P-100 Notebooks drivers are listed by P100 followed by ST and a four digit number; P100-ST1071 (for example) up to P100-ST9722. Also, will need to refine search parameters for your operating system once you are there. Model# number you have given may be incomplete - and then again, it maybe not be.
This is the Toshiba link for P100-ST1071; it is the first computer (model number) listed under Toshiba Satellite P100. You might find the missing ST???? part number on your machine, input that number under Toshiba support section at the website. Copy and paste entire section below.