That's good then. First of all, try deleting the data files in question manually from the location that you saved them to. Alternatively, if you want to remove everything comprehensively and restore it to factory condition, please proceed below.
Ok, Important Note - Please backup any files in your laptop that you don't want to lose, in an external location such as an external hard drive, flash drive, disk, etc. If you don't have any important files on this laptop, then proceed below.
Then, follow the steps below to recover your system to factory settings:
If the computer is running, shut it down.
Press and hold the 0 (zero) key on your keyboard and then press the computers power switch. When the computer turns on, the Toshiba HDD Recovery Utility screen will appear, presenting three options.
Press 1 to restore your hard disk drive to its original factory default state. A confirmation message will appear, indicating that all data will be overwritten and lost during the restore process.
Click Yes to begin the recovery. A message will appear once the operation is finished, indicating the HDD has been restored.
Press any key to restart the computer.
Let me know how you get on.