If you live in the United States, you can order the recovery disc kit for that laptop from here.
Navigate to:
Toshiba
Laptop
Satellite
A505-PSAT0U
Windows 7 Home Premium 64 bit
then follow the mailing/ordering instructions.
Navigate to:
Toshiba
Laptop
Satellite
A505-PSAT0U
Windows 7 Home Premium 64 bit
then follow the mailing/ordering instructions.