Whenever I watch a video in full screen, windows just keep auto adjusting the brightness setting. If I switch back to normal the screen gets dim all way down, I go back to full screen it gets brighter all way up, I switch to another window and gets dimmer aall way down again. This is extremely upseting, it didn't happen before. How can I fix windows from behaving this stupid? In case anyone asks or suggests it: All my drivers are up to date. This only happens when watching videos in full screen mode. I don't have a way to disable "adaptive brightness" from "power options" ever since some dim witted developer from Microsoft deleted this option. Buying and wearing sun glasses just to make windows usable again is not a good option, not even a solution. ********************************************************** ********************************************************** I installed a process monitor to check out what was happening. I noticed that Bitdefender was triggering at the very same time as the video playback whenever I switched from full screen to normal screen and vice-versa when watching any video. Digging up, I found out that my antivirus (Bitdefender 2019) was messing around with the power options due to a rather useless feature called "Profiles". It was set to automatically activate profiles. I found this thread on the VLC forum, which explains better what was happening in my case . Locked Question. This question was migrated from the Microsoft Support Community. You can vote on whether it's helpful, but you can't add comments or replies or follow the question. Anonymous 2019-03-03T11:21:06+00:00 Hi Kapil, thanks for your reply. I tried as suggested but it didn't work. However I found that the issue was not Windows but my antivirus. Please, see the update on my original post. 0 comments No comments Hi Kapil, thanks for your reply. I tried as suggested but it didn't work. However I found that the issue was not Windows but my antivirus. Please, see the update on my original post. Anonymous 2019-03-03T05:23:22+00:00 Hello FirefrorefiddleMeow, I'm Independent Advisor and Microsoft MVP, here to help you with your question. Please run Power troubleshooter from Settings app > Update & security > Troubleshoot. See if it helps you. Hope this helps! 0 comments No comments Hello FirefrorefiddleMeow, I'm Independent Advisor and Microsoft MVP, here to help you with your question. Please run Power troubleshooter from Settings app > Update & security > Troubleshoot. See if it helps you. Hope this helps!

Anonymous 2019-03-03T10:40:47+00:00 Hi Vijay, thanks for your reply. I tried all 4 options but none worked. Please see the update on my original post. This time the issue was not Windows but my antivirus. Again, thanks a lot for your reply. 0 comments No comments Hi Vijay, thanks for your reply. I tried all 4 options but none worked. Please see the update on my original post. This time the issue was not Windows but my antivirus. Again, thanks a lot for your reply. Anonymous 2019-03-03T06:20:56+00:00 Hi FirefrorefiddleMeow I am Vijay, an Independent Advisor. I am here to work with you on this problem. Please try these options one by one and check after each option. Troubleshoot Power Type troubleshoot in Cortana Search > Click Troubleshoot > Scroll down > Click Power > Run the troubleshooter > Follow on-screen direction. Restore Default for Power Settings Windows Key+I > System > Power & sleep > Click Additional power settings to open Power options > Click Change Plan Settings > Click Restore default settings for this plan Disable Fast Startup Reach to Power options as in previous step > Click Choose what the power buttons do > Click Change settings that are currently unavailable > Scroll down to Shutdown settings and uncheck Turn on fast startup > Click Save changes Uninstall / Install Battery Driver (Only for laptops) Shut down your computer > Detach power chord > Remove battery (if fixed no need to remove) > Attach power chord > Reboot your computer Windows Key+X > Device Manager > Expand Batteries > Right-click Microsoft ACPI-Compliant System > Uninstall > Shutdown the computer > Remove the power chord > Attach your battery > Attach your power chord > Reboot the computer to automatically install the driver Do let me know if you have any more question or require further help. 0 comments No comments Hi FirefrorefiddleMeow I am Vijay, an Independent Advisor. I am here to work with you on this problem. Please try these options one by one and check after each option. Troubleshoot Power Type troubleshoot in Cortana Search > Click Troubleshoot > Scroll down > Click Power > Run the troubleshooter > Follow on-screen direction. Restore Default for Power Settings Windows Key+I > System > Power & sleep > Click Additional power settings to open Power options > Click Change Plan Settings > Click Restore default settings for this plan Disable Fast Startup Reach to Power options as in previous step > Click Choose what the power buttons do > Click Change settings that are currently unavailable > Scroll down to Shutdown settings and uncheck Turn on fast startup > Click Save changes Uninstall / Install Battery Driver (Only for laptops) Shut down your computer > Detach power chord > Remove battery (if fixed no need to remove) > Attach power chord > Reboot your computer Windows Key+X > Device Manager > Expand Batteries > Right-click Microsoft ACPI-Compliant System > Uninstall > Shutdown the computer > Remove the power chord > Attach your battery > Attach your power chord > Reboot the computer to automatically install the driver Do let me know if you have any more question or require further help.