Viruses, spyware and poorly designed software can destroy the Windows installation on a Toshiba Satellite Pro L40 laptop. The laptop slows down, programs fail to respond and surfing the web is much slower.
If your Satellite Pro L40 is having these types of problems, reinstalling the Windows operating system can help. The Toshiba L40 laptop has a special partition on the hard drive that allows you to reinstall Windows and restore the computer to factory default settings.
Copy all of your important data files to an external hard drive or USB flash drive before reinstalling Windows on your Satellite Pro L40 laptop.
Turn off the L40 laptop.
Press and hold the F11 key while you push the power button on Toshiba L40 laptop. Continue to hold the F11 key until the Toshiba Recovery Wizard appears.
Press the down-arrow key to position the cursor over the "Recovery of Factory Default Software" option, then press the "Enter" key. Select the "Recover to out-of-box state" option and press the "Enter" key.
Follow the on-screen prompts on the recovery screens carefully. The recovery program will reinstall Windows and other original software on your L40 laptop computer. Press any key to restart the laptop, when the recovery program prompts you to do so.
Allow the laptop to boot into Windows. Copy any backup files back to your laptop and install other programs as needed.
Do not attempt to reinstall Windows to your Toshiba Satellite Pro L40 without the AC adaptor connected to the laptop. If the battery dies during the recovery process, the recovery process will fail. Reinstalling Windows and setting your laptop back to factory default settings will erase any programs you installed and all of your files so make sure to back up to external storage any and all data and programs that you want to keep.