Windows 7 CPU speed changing

It sounds like your CPU is dynamically adjusting its clock speed based on the system's demands, which is a normal behavior known as CPU Speed Scaling. However, the sudden increase in CPU speed when opening a game causing display driver issues is concerning. Here are some steps to help address this issue: 1. Update Drivers: - Ensure that all your drivers, especially the display driver, are up to date. Outdated drivers can cause instability. 2. Check Power Settings: - Check your power settings to ensure they are not limiting the CPU speed or causing it to fluctuate. Set it to high performance mode. 3. Monitor Temperatures: - High CPU temperatures can lead to performance issues. Monitor the CPU temperature using software like HWMonitor. 4. BIOS Settings: - Check your BIOS settings for any power-saving features that might be affecting CPU performance. Disable any power-saving features that could be causing the speed fluctuation. 5. Performance Settings: - Adjust the performance settings in your system to a fixed clock speed rather than allowing it to scale dynamically. 6. Check for Malware: - Run a malware scan to ensure that malicious software is not causing performance issues. 7. Disable Overclocking: - If you have overclocked your CPU, revert it to default settings to see if that resolves the instability. 8. Monitor System Resources: - Use Task Manager to monitor CPU usage and check for any processes that might be causing sudden spikes. 9. Check for System Updates: - Ensure that your operating system is up to date with the latest updates. It's essential to follow these steps systematically to identify and address the root cause of the issue with your CPU speed fluctuations and display driver crashes. If the issue persists, further troubleshooting may be required.