If nothing is on the drive then your options are limited. Does the disk that came with the computer boot on another computer? Toshiba may offer restore disks for a nominal cost but Vista will no longer be supported after April of 2017.
I recommend you download a linux distro and install that to the computer, especially if the computer is only used for basic browsing and email.
According to the specs the computer has 2GB or RAM and a AMD 64bit processor running at 2GHz. Linux would run well on this computer. I would recommend the 32bit versions as you only have 2GB or RAM.
I would post a new thread in the Linux Forum and reference this thread. There are BC Advisors who can give you their opinion on the best option going forward.