why does my computer screen turn green when watching videos
In windows media player it is most likely a driver problem, so make sure your drivers are up to date. If the problem persists after updating drivers you can go to Screen Resolution in Control Panel, Click Advanced Settings, click the Troubleshoot tab, and then click Change settings. If your driver allows you to change graphics settings there, a slider will can be manually adjusted to disable hardware acceleration. If that isn't working for you either, there's another workaround that may or may not work with Windows 8. 1:
In Windows Media Player, click Properties on the File menu. Click the Advanced tab. Click Video Renderer, and then click Properties. Click the DirectDraw tab, and then click the YUV Flipping check box to clear it. Click OK, click OK, and then click Close. Quit, and then restart Windows Media Player. Test to determine if the issue is resolved by playing a video file. If the issue is not resolved, continue to step 7. In Windows Media Player, click Properties on the File menu.
Click the Advanced tab. Click Video Renderer, and then click Properties. Click the DirectDraw tab, and then click each check box that is selected to clear it. Click OK, click OK, and then click Close. Quit, and then restart Windows Media Player. Good Luck, -B Unfortunately, I think this is one of those early adoption problems. The green screen is almost always related to hardware acceleration. First, just reboot. If there's an intermittent problem that causes the graphics hardware to occasionally get into a bad state, rebooting will at least get you going again for a while. If it starts doing the green-screen thing immediately after reboot, that's an interesting data point. I doubt that you can get to the settings menu when in Modern mode. We're severely restricted in Modern mode, and I believe that hardware acceleration is always on. Win8+ is still relatively new, and it's not widely adopted, so all of our time-tested support advice is geared for Win7 and below.
You might want to try launching IE in desktop mode and trying the disable hardware acceleration instructions, but I'm not sure that it will help. Thanks for the feedback about the experience being confusing. We don't get a lot of Win8 questions at the moment, so there hasn't really been a lot of urgency around creating/modifying our guidance for it, but we definitely don't want to send people in circles like that. I totally appreciate your frustration, and we should be able to improve that experience without too much trouble. It seems to take a long time for graphics drivers to mature on new platforms -- it's just a really difficult problem, so disabling hardware acceleration when it's not working is an important workaround. It's why we added the dialog in Win7 -- we exposed a whole bunch of driver bugs when we turned on hardware acceleration across a billion-plus computers, and we wanted people to be able to work around it.
In the meantime, you might want to install a secondary browser to work around similar issues as you encounter them. Both Firefox and Chrome work on Win8. 1, and they each have a unique version of Flash Player. Firefox should definitely allow you to disable hardware acceleration through the traditional mechanism. Chrome will allow you to disable hardware acceleration across the whole browser through the Chrome settings, and I *think* you can disable it just for Flash through the standard UI, but I can't remember for sure off the top of my head. We may be in the same situation there where we don't have direct control over whether or not to leverage hardware when it's available. If you can post a couple exact links to videos that reproduce this problem, I'd be more than happy to take a look using our body of Win8. 1 machines to see if we can reproduce the problem. Thanks!
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