1) Download and run HijackThis from
http://www.trendsecure.com/portal/en-US/tools/security_tools/hijackthis2) Post the log, I (or other qualified hijackthis log analisyts) will analyze the log, and tell you anything.
3) Download Malwarebytes' Anti-Malware from
http://malwarebytes.org/mbam.php **DO NOT INSTALL YET**4) Download SUPERAntispyware from
http://www.superantispyware.com/ **DO NOT INSTALL YET**5) Wait for reply on topic.
BASIC STEPS FOR PREVENTION OF SCUMWARE:
1) DO NOT use file sharing sofware, such as torrents, Limewire, Frostwire, as they are easy ways to get them
2) If you do anyways, DO NOT DOWNLAOD .EXE, .ZIP, or .RAR
3) Have an antivirus that updates often, my recommendation is
Avira AntiVir4) Have an active Anti-Spyware that Updates often. My recommendation is
SUPERAntispyware5) Have an Active Firewall, I recommend
ZoneAlarm Free Firewall : But Windows Firewall is fine (just very lowly recommended for XP)
6) A really good All around Anti Malware that removes all. My recommendation is
MalwareBytes' Anti Malware7) Use Firefox Web Browser, with NoScript addon (at least).

Follow Basic Safety Steps & Routines, READ ALL popup boxes having to do with web browser security ALSO.
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Never go easy on a computer, always beat it up for the information you need, after throughly beating it, give it a cookie
My YT account