If you have the application pre-installed on your computer, go to Start, type HDD Protection and open the utility. Check ON box below Choose whether to enable or disable HDD Protection and select the protection level for Battery and AC Power. After that click Setup Detail, check the Detection Level Amplification and HDD Protection Message boxes, click Apply and then OK. If you don't have the application installed, go to Toshiba Support page, identify your computer model, select your operating system and download and install the utility. After that, follow the above instructions.