I know such tools are not everyone's cup of coffee but this has got pretty good reviews and it's free.
You need to go to http://www.chip.de/downloads/Wise-Care-365-Pro_84138516.html… and click on "download vollversion.
Once downloaded don't get scared, the installer is in German, the program itself is in English. Install by clicking a few times "weiter".
Go here http://wisecleaner.com/giveaway/chip.html and request the free license, you need name, surname and email address. Don't need to be real besides the email address because they will send you a key. You have to use the key with the same name and surname as in registration.
whats the ref=adventskalender on the end of the web address?