Intel core i7-3820
16 GB RAM
Windows 7 ultra 64 bit
I have been using McAfee to scan my computer.
So a couple of months ago I had to restore my computer to factory condition due to a nasty virus. Ever since then my computer has been doing this weird thing where for like 1-3 seconds, the video and audio will slow down immensely, making the audio sound almost demonic. It usually happened when I opened a new tab, but would also randomly happen whenever I was watching a video, or playing a game.
Now, it has gotten much worse. The same thing is happening, but this time it lasts for about 5-15 seconds. It also happens more frequently. Also, the audio just basically stops now, but still does what was described before a little bit. I ran a couple of quick scans but nothing seems to be infected. This is making my time with my computer recently very un enjoyable, so I want to resolve this quickly. Is my computer infected? What is happening? What should I do? Thanks in advance!