The steps given here can help improve performance: Clean Up Factory Bloatware - Windows 7 Forums
Most tech enthusiasts clean reinstall to shrug off all of the residue of the factory crapware and useless utilities which have better version built into Windows 7. Clean Reinstall - Factory OEM Windows 7
In your case I would even consider reinstalling 32 bit Windows 7, especially if Toshiba provides driver
support for it - but the few drivers
not provided by Windows 7 or optional Updates can usually be found even if not.