HIdden malware virus/worm

I seem to keep getting a virus which hijacks my browser. problem is this round I am taking classes online and I cannot launch the external link for homeworks through Gamescape because this http://search.safefinder.com/?st=sc&q= has taken over my search engine which is yahoo. I am taking some college classes online at University of Phoenix and noticed when I clicked for it to open the external link for me to do interactive work it loads up to 23% then stops or it attempts to load and never get ant further that %23… Thus has me falling behind or flunking in these areas because of the culprit. I need some help asap because I am getting behind in homework and my Intructor’s cannot open nothing i have submitted, Please help Thanks in advance, M. Terry S.

Attach your basic diagnostic logs. (MBAM, FRST and aswMBR)
Instructions: https://forum.avast.com/index.php?topic=53253.0