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Re-boot the computer.
search the channel scmown on youtube
If YouTube displays a black screen with no error messages, make sure to check your hardware acceleration settings and disable it if needed. Make sure any add-ons that could disrupt the video player are also disabled.
Update your version of adobe flash player.
REBOOT, but DON'T just Respring
Just restart your laptop!
go to multi player and click local then split screen.
Call of Duty Black Ops is four player split-screen, and 2 can play split-screen online.
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Just connect both controllers and go to multiplayer and split screen.
Go on YouTube and search how to make girl playercard for Black Ops.
How can you see the answer? YOUR SCREEN IS BLACK!