Safari bounce but won't open

Question

Hello! I’m having a few problems with Safari 8.0.2 on Yosemite (10.10.1). Whenever I click the icon it bounce and the black dot appears, but it won’t open and the dot disappears. Actually, the first time I open it after turning on the mac, it asks me if I want to open the last page I opened, but whatever I choose it just closes down.
If it may help, the last thing I’ve done before having this problem was when I was looking for a way to have whatsapp on the mac, and I downloaded a software (from a safe source though, or at least I believe so) that I deleted right after.
Thanks to everyone who’ll respond.

Answer 1

Genieo Adware is installed.  Removing it will help.
If you have another browser installed, use it.
If not, launch App store and get another  browser for temporary use.
Remove it afterwards.
1. Use  free  AdwareMedic by clicking “Download ” from here
    http://www.adwaremedic.com/index.php
    Install , open,  and run it by clicking “Scan for Adware” button   to remove adware.
    Once done, quit AdwareMedic by clicking AdwareMedic in the menu bar and selecting
    “Quit AdwareMedic”.
               or
    Remove the adware  manually  by following the “HowTo” from Apple.
    http://support.apple.com/en-us/HT203987
2. Safari > Preferences > Extensions
     Turn those off and relaunch Safari to test .
     Turn those on one by one and test.
3. Safari > Preferences >  Search > Search Engine :
    Select your preferred   search engine.
4. Safari > Preferences > General > Homepage:
     Set your Homepage.