The screen saver was working really well for a week but then, it stopped working all together when I tried to adjust the preferences to change the bar graph to a line graph.

Does anyone have a fix for this?

If not, can I reload or do something else to make the screen saver work again.

It's a simple thing but the screen saver is really cool.

If you keep abandoning all work, of course it won't be able to show the graphics/screen saver.
But to just be sure you have everything set as it should: in Windows press Start->in Search type "screensaver" one word, no quotes, choose "Change screen saver" from the menu. On the popup make sure that BOINC is set as the screen saver. Or World Community Grid, if you use their BOINC.

You'll also need some prerequisites, like correct drivers installed from the manufacturer of the GPU on the videocard, ones that include OpenGL.
The drivers installed by Windows do not have these included.

If you have an ATI/AMD GPU: https://support.amd.com/en-us/download
If you have an NVIDIA GPU: http://www.nvidia.com/Download/index.aspx?lang=en-us
If you have an Intel GPU: https://downloadcenter.intel.com/

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Did you recently get the Windows 10 Creators Update? If yes, then your BOINCSCR.EXE won't start anymore.

Also, NVIDIA GPU is not Detected and won't Run until Game Mode is Disabled since the Windows 10 Creators Update is applied.[/quote]