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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 Win7. Clean Reinstall - Factory OEM Windows 7
In your case I would even consider reinstalling 32 bit Win7, especially if Toshiba provides driver support for it - but the few drivers not provided by Win7 or optional Updates can usually be found even if not.