You just need to download the .iso image then burn it to a CD. Boot from the UBCD5 disc and go to Hard drive diagnostics.

Toshiba doesn't really have their own diags from what I remember, so you can try Seagate Seatools. If you get any temperature sensor errors, just ignore them since it's not a Seagate drive.

If you still can't figure out UBCD, then you can try getting Seatools directly.
http://www.seagate.com/support/inter...ls-dos-master/