So, I'm pretty new to Windows after leaving OSX. I have Win8.1 with all updates.
Last night I was surfing in Chrome and suddenly it crashed. I restarted my machine and Chrome. When I then went onto some websites I was absolutely bombarded with ads and pop-ups (I run adblock). Even worse is when I click on something I want to look at I get taken to a dodgy page in some dark corner of the net. My machine is nearly unusable. Most video players crash and most websites I visit are now not even worth bothering with. Same with Firefox.
I've downloaded Kapersky, Bitdefender and AVG. None of these can find anything - I really don't know what to do.
I have low technical ability so please be patient with me if you do decide to help.
I'll be happy to answer any questions, provide screenshots, anything.
Thank you so much.