Brand: TOSHIBA
Category: Laptop
Document Type: Manual
Language: EN
Manual for Satellite®/Satellite Pro® C40/C50/C70-B
Uploaded: Nov. 21, 2025, 7:46 p.m.
Warranty Information
None
Your computer is ENERGY STAR® qualified. Toshiba is a partner in the Environmental Protection Agency’s (EPA) ENERGY STAR® Program and has designed this computer to meet the latest ENERGY STAR® guidelines for energy efficiency. Your computer ships with the power management options preset to a configuration that will provide the most stable operating environment and optimum system performance for both AC power and battery modes.
To conserve energy, your computer’s power management features have been pre-configured to activate the display Sleep mode after 15 minutes of inactivity; the system Sleep mode is activated after 30 minutes of user inactivity. We recommend that you leave these and other energy saving features active, so that your computer will operate at its maximum energy efficiency. You can wake the computer from Sleep mode by pressing the power button. See the “Mobile Computing” section of the Toshiba User’s Guide for more information on using power management settings to conserve computer energy.
Troubleshooting and error codes
| Problem | Solution |
|---|---|
| Your program or application stops responding. | Press Ctrl, Alt, and Del simultaneously (once), and then click or touch Task Manager. Select the program or application you want to close, and then click or touch End Task in the lower right corner. Close the remaining programs one by one by selecting the program name, then select End Task. If it does not work, power off your computer, and then restart it. |
| The computer will not start. | Make sure you attached the AC adaptor and power cord/cable properly. Press and hold the power button for at least 10 seconds. Check that the wall outlet is working properly by plugging in another device. Verify that the computer is on by looking at the Power button. If the button is glowing, the computer is on. If the button is not lit, try turning the computer off and then on again. |
| The AC power light is blinking. | Connect the AC adaptor to a different power outlet, preferably in a different room. If the computer starts normally, there may be a problem with the AC outlet itself, or the voltage level available from it. Verify that the AC adaptor is the correct unit for your computer model. The computer may not be able to start from an AC adaptor that is rated for less current (amperage) than the computer requires. The labels on the bottom of the computer and the AC adaptor show the specifications for voltage (“V”) and current (“A”) for each device. The voltage level must match exactly. The amperage rating of the AC adaptor must be equal to or greater than that required by the computer. |
| The battery light is blinking when the computer is on. | Check the OUTPUT specifications on the AC adaptor (for example, DC 19V – 3.95A). Check the INPUT specifications on the bottom of the computer. The output specifications of the AC adaptor must match the input specifications of the computer. If the specifications do not match, locate and use the AC adaptor that shipped with your computer. If the specifications do match, contact Toshiba. |
| The Windows® operating system is not working | Once you are familiar with your computer and used to the way the operating system responds to your work routine, you can easily detect if the operating system is not working correctly. For example: The operating system fails to start after the initial startup appears. The operating system takes a long time to start. The operating system responds differently from the normal routine. The screen does not look right. |