I would create the recovery disks first (if you can, may not be possible if the drive is faulty) - Instructions here -
Creating Recovery Discs or Saving a Recovery Image to a USB Flash Drive (Windows 7) | HP® Support
Toshiba diagnostic tool here -
Software Utilities
Checked the serial number here -
https://myapps.taec.toshiba.com/myap...DD8450EFEE1E58
Showing out of warranty, so if it has a fault and is unrepairable, a new hard drive will be needed (which is why you`ll need the recovery disks).