Are you still running the Toshiba factory preinstalled Windows 7? If so this is a corrupt install that throttles Windows 7 native performance with bloatware and useless duplicate utilties all riding on the back of the OS.
For this reason most tech enthusiasts will not run such an install and instead Clean Reinstall - Factory OEM Windows 7.
The steps in the blue link will assure you get and keep a perfect install if you use the tools and methods given.
The installer for your licensed verison is provided in Step 1 which you can also use for repairs.