Having purchased this PC from an acquaintance for my son last week, we are unfortunately having redirection problems surfing and difficulties installing or updating security programs.
Using any browser (but I commonly use Chrome) I'm constantly redirected to one of several sites such ASK.com, shagaholic.com, ebay, youtube....
With regards to installing programs Ive tried but failed to install AVG and my ISP's (virgin media) free software. I have managed to install Ad Aware but I cannot update the definitions and have the same problem with all windows updates.
I ran Malwarebytes but the system crashed last night after 14 hours of running and reaching nearly 1.9 million files.
I hope that this info helps