It sounds like an incompatibility issue between the Crimson drivers and your system. Here are some additional troubleshooting steps you can take.
- Update your Motherboard bios to the latest available
- Ensure your Windows 7 OS is fully up to date, including recommended and optional updates
- Ensuring you have the latest updates installed for Visual Studio
- Try using a different cable and connection to the monitor from the graphics card. For example, if you are using DVI, try HDMI etc.
If the issue persists after these steps, i would recommend rolling back to your last stable Catalyst driver.
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