simply download malware bytes anti-malware (free) then update it and make a full scan
http://www.download.com/Malwarebytes-Anti-Malware/3000-8022_4-10804572.html
and then you have to get some solid protection,download these free programs (completely free)
uninstall any security program you are using and install these free programs
1-Anti-virus
a-avira personal classic edition(free)(detection rate 99.6%)
http://www.download.com/Avira-AntiVir-Personal-Free-Antivirus/3000-2239_4-10322935.html?tag=lst-3&cdlPid=10831109
2-Anti-spyware
a-super antispyware free(one of the most recommended antispywares)
http://www.download.com/SUPERAntiSpyware-Free-Edition/3000-8022_4-10523889.html
b- a-squared free(will get rid of all kinds of spyware,backdoors.trojans,keyloggers and etc)
http://www.download.com/A-squared-Free/3000-2239_4-10262215.html?tag=lst-1&cdlPid=10832180
3-firewall
a-comodo firewall pro(free)(the only free firewall to pass matousec leaktest with an excellent score 95%
http://www.download.com/Comodo-Firewall-Pro/3000-10435_4-10460704.html?tag=lst-1&cdlPid=10849947
4-browser
a-firefox 3.0(safest browser,fastest browser and most enjoyable browser)
http://www.download.com/mozilla-firefox/?tag=lst-3&cdlPid=10854845
5-browser add-ons(firefox)
a-mcafee site advisor(warns you of bad sites)
http://www.download.com/McAfee-SiteAdvisor-for-Firefox/3000-11745_4-10493671.html?tag=lst-1&cdlPid=10663377
6-pc utilties
a-ccleaner:(cleans temporary internet files,history cookies , fixes the registry and etc)
http://www.download.com/CCleaner/3000-2144_4-10315544.html?tag=lst-1&cdlPid=10837066
b-revouninstaller: (uninstall the programs and removes the traces left in registry )(completely remove sticky programs like norton because it scans the registry for traces left in the registry after uninstalling the programs
http://www.download.com/Revo-Uninstaller/3000-2096_4-10687648.html?tag=mncol&cdlPid=10854684