Is this a new laptop?
Do you have the Windows / Recovery disk?
When does this error occur?
Can you login Windows?
Can you remove both the charger and battery, then turn on the laptop with only the charger connected (no battery) and check?
Can you turn off the toshiba laptop, then press & hold the key 0 (zero) the turn on the laptop while keep holding the key zero until a system recovery menu appears, if it appears at all?
But this is likely hard drive issue.