Comment by gu5

First, shut off your computer. Deal with the problem (looking at HN, for example) on another device. From there, boot up your computer in safe mode (depends on your operating system). Get all the files you want to keep on a flash drive, and reset your device. That's the most secure way to do it, as it wipes all the files from your computer and deletes anything the hackers could be using to control your computer remotely. Change your passwords and be careful what you download.