Macbook Air 11" audio/video lockup glitch, Macbook Air 11" audio/video lockup glitch

Hi all,
I have an older Macbook Air 11" (with 4gigs ram/128gb HD). Running Mountain Lion.
Recently, every once in a while (about once every couple of months) I get this fatal lockup. It gives a loud ticking noise (not fan related) along with screen glitches. The ONLY way to stop it is to do a hard restart. Then it works fine. I think it started happening about 8 months ago. Last time it happened, I recorded it with my iPhone.
Any thoughts on what it could be?
http://youtu.be/g6ph9UinOiY

That definitely looks like a hardware issue. you may want to find the nearest AASP or Apple Store and pursue repair options...

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OS X 10.7 Lion, 10.8 Mountain Lion & 10.9 Mavericks
Reset Password starting from Recovery HD
Start the computer,then press and hold down command and R keys to start into recovery partition.
When you see the Apple logo, release the keys.
Wait until OS X Utilities window shows up.
Move the mouse to the menubar at the top and click "Utilities", then select "Terminal"
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Macbook Air 11" audio/video lockup glitch, Macbook Air 11" audio/video lockup glitch

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