T410 / T420 - Screen flickering randomly / screen contrast changed while on battery (Intel GPU)

[#1]

Question

Why does my laptop screen flicker / change in screen contrast when I am using battery mode as though the refresh rate lowered automatically?

Answer

1. Ensure that your BIOS, Power Manager, GPU driver have been updated to the latest version available. Check Link
2. Right click on Desktop and select "Graphic Properties"
3. Select Power
4. Select Power Feature
5. In Graphics Power Plan Settings, change drop down menu to "On Battery"
6. Uncheck "Display Power Saving Technology"
7. Press "OK"

Screenshot below.