And about a month ago I upgraded it to the Windows 8.1 preview. Hi I have a Lenovo ideapad P400 Touch laptop that I just bought back in April with Windows 8 on it. The fn + brightness key dont work on my aspire e1-471 windows 7 32bit: i can't adjust screen brightness acee aspire e14: Brightness adjustment not working? How to increase the brightness of Lenovo ideapad? Precision M4600 brightness and backlight issue: Lenovo Ideapad 310 brightness issue: Laptop brightness issue: Brightness. Ideapad P400 Brightness Not Working Lenovo Look up for the Display Adapters in Device Manager. To solve this, you need to follow simple steps. Laptop Tech Support: 3: Jun 5, 2015: S Some Windows 10 users are experiencing a Windows 10 brightness control “not working” issue. Problems with laptop brightness after changing screens: Laptop Tech Support: 16: Feb 18, 2016: A: I have changed the screen of my lap top-lenovo.Now it works with very low brightness: Laptop Tech Support: 1: Jul 22, 2015: M: Laptop Brightness and Close Lid Options are Not Working After Changing the Screen.Ideapad P400 Brightness Not Working Lenovo.
