It could be due to the fact that you are disconnecting the monitor cable when you plug in the game console. Check the cables at the back to make sure everything's connected.

可能是由于你插游戏机时把监视器没连接好，检查一下后面的线路确保所有线都连接好了。

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To ensure the construction precision and structure safety of the Wenhui Bridge, engineers built a construction control measure network and adopted total stations to monitor cable tower offsets.

为确保文辉大桥的施工精度和结构安全，建立了施工控制测量网，采用全站仪对索塔位移进行了监测。

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Check the cable that connects the monitor to the computer's video output.

检查连接显示器和计算机视频输出端的电缆。

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Another element that might concern some companies, according to Cable Digital News, is a "monitor application" that the cable company uses to control how devices use processing resources.

ENGADGET: Cable ops, consumer electronics manufacturers sign agreement on tru2way roll out

After the meeting, Downing Street said Mr Cameron had asked the Education Secretary Michael Gove to examine arrangements for confronting extreme views in schools, Business Secretary Vince Cable to monitor universities and Justice Secretary Chris Grayling to do the same in prisons.

BBC: Woolwich murder suspects remanded in custody

It can also apparently be configured such that each monitor has it's own USB cable-run back to the PC.

ENGADGET: Samsung's UbiSync monitor rig: all USB, all the time