So in January, I had to reinstall my whole Windows 8.1 laptop, and after the reinstallation, my favorite websites came back without me restoring them, but I had to reinstall Google Chrome, but Google Chrome had the YouTube options add on still without me installing that add on again. I have a HP Pavilion 15 laptop.
Now, sometimes when I type, some words disappear, and sometimes the tabs in the browsers close by themselves or a new tab gets open without me opening any tab.
What is happening to my computer? Am I being hacked, or is there a virus? Malwarebytes and ZoneAlarm didn't find anything, but AdwareCleaner found a program. But I wonder that if some bad programs are masked and they pretend to be good or normal programs. Is that possible? The hackers' ideas never end though.