I spent the better part of six hours today on a new nasty.
windowsclick.com is the meanest little baddie i've ever removed.
It won't allow you to visit any site that has a removal tool, but it doesn't interfere with other sites.
if you do manage to get something downloaded, it won't let it install.
so you rename the exe and you get the program to install, but windowsclick won't let it run

after the install, before you run a removal tool like malwarebytes, or superantispyware, or combofix, you have to rename the program itself.
after the rename, reboot into safemode, and run the fix from there.
I used superantispyware, and it took about 2.5 hours to do a complete scan and removal.