Why does Explorer freeze my laptop?

16 Oct 2012
Windows 7
Chrome 22
16 Oct 2012 | Windows 7 | Chrome 22

In Explorer, I enter for example “YouTube” and it may or may not appear. If YouTube doesn’t appear, a message will say: YouTube not responding. If YouTube does appear, my screen goes blank when I select a video.

I then try again in another tab, which doesn’t work. In any case, everything “freezes” leading me to think that my laptop is malfunctioning. This past weekend Explorer has been shutting down and restarting on my laptop. My Norton antivirus indicates that my laptop is working fine. What’s wrong?

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