I'm running Windows 7 64bit on a laptop (Samsung R560) using a cheap external CRT monitor.

The screen is a littler dark for my liking, despite having the physical monitors settings up to the max for all the brightness-related settings.

Windows 7 has a tool called "Calibrate display color" (search in the start menu). Running this tool, you have a slider that allows you to adjust the "Gamma", which sliding up gives me acceptable brightness levels.

Unfortunately, upon reboot (and certain other activities such as running certain fullscreen games) this is reset to default.

Is there a way to make this persistent? Some registry setting? Batch file to run at startup even (less preferable as I'd like games to run brighter too)?