I have encountered SendSpace pop-up ads. NEED HELP!!!

I have downloaded a file from Sendspace and I wasn't paying enough attention and ended up installing additional unknown applications. My antivirus only tried to block something and failed to remove those extra applications. I read some tips from internet but it doesn't work either. I feel hopeless right now. Those pop-up ads show everywhere and I will be redirected to other websites when I try to open a new tab or visit certain websites. I am just asking for some help here and anyone who is kind enough please help me fix my computer. It's really important for me. Thank you!!

First of all, you should not download anything you are not familiar with. It's dangerous.

Second, I hope that I can help you.

There are some ways for you remove it!

1, control panel.
2, registry.
3.task manager.
4.better antivirus?maybe.....malwarebytes, adwcleaner....

good luck to you!

it's a terrible software. I think I should be more careful when I download something! Good luck to you by the way!

Really? I will have a try right now! Thank you for your tips!! You are so kind!!!!