I bought a brand new Lenovo PC this year, as my old Dell PC was very, very, very slow, and was experiencing the same issues I thought it was because the OS was XP. Bought a new one and the same things are happening: Not-Responding messages on just about any program (even window explorer), internet freezes-up (IE, Firefox, Chrome), Every time I use the internet, it freezes-up. I have McAfee installed, run ccCleaner, and other malwares programs, but it is still running slow. I have a removable (5TB back-up) drive, and a printer attached to this PC. I had the same back-up drive connected to my old PC. Could it be that I have a malware or a virus on my back-up drive? I thought that buying a new computer, with windows 10, would solve my issues, but nooooooo, issues are still around.