How do 你 take a picture 或者 vdeo of yor desktop?

For a video, 你 need a screen recording software. There's tons out there, but I recommend camstudio.
For pictures, just press Ctrl+PrtSc and paste it into an image editing software and save it.

Press Prt Scr, it's on the 最佳, 返回页首 row of the keyboard 下一个 to Scroll Lock...and go into paint and click on paste... voila.

Hahahah! Do 你 happen to have compromising pics 或者 videos? XD Sorry that's the first thing that came to my mind when I read your question!

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