Guide for Windows Alt+Enter doesn't work / GR2D Error!

This error pops up as a valid resolution isn't found for Maple to display at; you can fix this by adding 800x600 to the list of available resolutions!​

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Intel GPU Users

Intel HD Graphics:
Right-click Desktop → Graphics Options → Custom Resolutions

Intel HD Control Panel:
Right-click Desktop → Intel Graphics Settings → Display → Custom Resolutions

Enter the following settings:
Width: 800
Height: 600
Refresh Rate: 60
Color Depth: 32 bit



NVIDIA Users

Download the Custom Resolution Utility at:
https://www.monitortests.com/forum/Thread-Custom-Resolution-Utility-CRU

Open cru.exe → Tick '800x600' results on the left list → Click OK.[/B]



NVIDIA Specific
Match monitor refresh rate:
Open up the Nvidia control panel and make sure the refresh rate is set to 60Hz​

Turn off DSR:
Under NVIDIA Control Panel > 3d Settings > Manage 3d Settings > DSR - Factors


AMD Users (Solution 1)

Download the AMD control center/AMD Catalyst and change the frequency to 60hz.


AMD Users (Solution 2)
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Open Radeon Settings (right-clicking on your desktop and select AMD Radeon Settings) > Display Tab > turn on Virtual Super Resolution

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Multiple Monitors

If you have another monitor, sometimes unplugging it fixes GR2D errors.​