I use the Display Color Calibration program in Windows 7 to get my monitor's gamma down. It was working great until two or three days ago, but it now resets itself on reboot, every reboot. I've had this problem before and it was related to igfxpers.exe, but that is not among my startup items and thus isn't the issue.
Oddly, during the Welcome screen, the gamma goes way up, then seems to come back to where it should be, only to get really bright again and stay there. Even stranger, if I run the calibration tool, bring the gamma down and just cancel the process, the gamma comes back down to where it should be.
The problem seems to have cropped up after I upgraded to the newest version of Microsoft Security Essentials, but I'm not sure that's the cause of the issue.
Thanks for any help you can offer!