|That model is an internal 250GB SATA II hard drive. |
I don't believe the Toshiba has a drive fitness test of their own so Seatools is a viable utility.
From the data Seatools generated I would guess the hard drive may not be rotating. Can you feel any mechanical motion when the drive is connected?
This could be due to insufficient DC power to actually run teh drive or the drive may just be worn out.
3.5" & 2.5" SATA hard drives use the same type of connectors, so you can temporarily connect the bare (no enclosure) drive to any desktop that has the proper SATA connections.
Be aware that when doing this, the BIOS may automatically set the newly introduced drive as the boot device. You don't want that to happen so you should enter the BIOS screens immediately upon start up to verify the boot order.
Are you using any other USB devices on your laptop?
Has this external drive previously worked when connected to the same USB port on that notebook?