Malware infected my laptop in the form of a malicious little item known as Spylocked. It got in on a Trojan Horse and altered my registry. Add/Remove Software in Windows did not work. I tried a demo version of Spyhunter and it found the Trojan horses and the changes to my registry. I purchased the commercial version for $29.95 and my system is clean. I'm not a geek and have little understanding of OS and will not touch my registry. So I was relieved. FYI: my laptop got infected after I'd updated windows, re-booted and saw a pop-up (very Windows like) telling me to update my security software, so I assumed (wrongly) I was to do that to. Then I got hit. Don't make the same mistake I did and be careful.