I have a Dell Inspiron N5720 and was quite happy with it. After installing Windows 8 some mysterious screen flickering appeared. I ignored it for a while, but I noticed that it only happens when not plugged in. So only a few possibilities are left:
- The graphics card/display/something in between is broken
- The battery is defect
- Something is wrong with the drivers
Checking the first two possibilities would’ve been too time consuming without a real result. And it’s kind of unlikely that the battery and/or graphics card broke just as I installed Windows 8. And the fact that it only happens when on battery is also a good hint, as this indicated that it could be something with the power saving settings (spoiler: it was).
A Dell Inspiron N5720 has a nVidia GT 630M and an Intel HD Graphics 4000. Let’s see what the Intel Graphics Control panel looks like. To open it, follow these instructions.
- Right click on desktop.Go to “Graphics settings” or however they call it now (they forcefully localize this stuff now..) This should appear:
- Click on Power, then on “On Battery”.
- Switch it to maximum performance, and turn off the “Display power saving technology”.
I hope this helps. I haven’t had flickers since the update after changing this.