Open "Tablet PC Settings" - "Calibrate the screen for pen or touch input"
0) Tap the Reset, if calibration data was saved
1) Select 1. Toshiba Internal 1024x600 Panel
2) Calibrate
3) Select 2. Toshiba Internal 1024x600 Panel
4) Tap the Reset
5) Re-select 2. Toshiba Internal 1024x600 Panel
6) Calibrate