Many manufacturers include "trialware" with their original installations. Companies often profit by being paid to offer trial versions of software in hopes that customers will 1. either like the trial enough to go on to purchase the full product or 2. purchase a full product not so much due to liking it as to following the path of least resistance and sticking with it because "it's there."
When I help out friends with their computers I often run a nice utility called The PC Decrapifier (free). http://www.pcdecrapifier.com/features
Originally called the Dell Decrapifier, you can see that it is designed to help owners of new PCs from any manufacturer or those that have been restored to restored to factory settings. It will also work for computers that are not new, too, by helping to uninstall other unwanted software. I've used it for both types of computer scenarios.
NOTE: Use it only if you feel comfortable, however. Otherwise, you can go into Programs and Features and uninstall each trialware program separately. I'm a strong believer in choosing what I want to be installed after reading reviews and not having programs installed for me. That includes programs that hitchike or piggyback on other software. Please take a look at this article that discusses such programs:viewtopic.php?f=6&t=307
Since I'm not a gamer and use my Windows 7 home computer mostly for office applications, volunteer work, and keeping up with family I have a minimum of additional software installed: antivirus and personal firewall (paid) , Microsoft Office (older version), Firefox web browser (free), Foxit Reader (free and NOT Adobe Reader), Thunderbird (free), GFI backup software (free--I don't care for Windows backup), Picasa photo software (free), Java and Flash (free and usually needed by websites), CCleaner (free), and a couple of paid applications for personal use.
Once you get your computer free of trial programs and install only what you want you can manage things nicely with the freeware application that I mentioned above called CCleaner. I find it a bit more user-friendly than using msconfig.exe. http://filehippo.com/download_ccleaner/
Please read this description about the monitoring features that CCleaner now activates by default: http://tinyurl.com/lnf9ldg
I have not personally wanted to take the time to try them out so I turn them off. I may try them some day, however.