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Windows 7: Gamma resets on reboot

03 Jul 2010   #1

W7 Ultimate
Gamma resets on reboot

I use the Display Color Calibration program in W7 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!

My System SpecsSystem Spec
03 Jul 2010   #2

Vista 64 Ultimate, Windows 7 64 Ultimate, Ubuntu 9.10

This is more than likely a display driver issue, please complete your systems specs a bit more thoroughly, i.e. ATi HD5770, ASUS MRP45678ie, etc w/o knowing your hardware it's very hard to really help you.
My System SpecsSystem Spec
15 Jul 2010   #3

W7 Ultimate

Turns out that reinstalling my video card driver permitted me to set the gamma permanently again through the calibration wizard. Windows recently updated some critical components, and following that the gamma reset on reboot. Another driver install was enough to fix it once again. I shouldn't have to fix it this way, but at least it works now.
My System SpecsSystem Spec


 Gamma resets on reboot

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