Thinkpad X220 flickering screen

[ThePCRunners]

Hello, I recieved a laptop from a friend that has a flickering screen when not connected to power supply. 

Also the flickering stops anytime I open an app (Explorer, chrome, task manager....)

The flickering occures when windows starts (before entering the user), after I did all of the updates it stopped doing it on the desktop, at least for now but it is doing it when restarting the computer and windows starts.

I tried many things but none worked. The laptop barely has apps in it as it had a reset not too long ago.

Thanks a lot for your help!

I hope that I uploaded the topic to the right place, if not then tell me please and I'll repost it in the right section.

EDIT: It also occures when I click on the "Search" in the buttom bar.

[Ashleyyyy]

make sure the display is set to 60hz when it's not connected to power in the intel graphics settings.

[ThePCRunners]

2 minutes ago, Twilight said:

make sure the display is set to 60hz when it's not connected to power in the intel graphics settings.

Thanks for your respond!

I checked it earlier and it was set to 50 Hz, changed it to 60 Hz but it didn't make a change

[ThePCRunners]

I just disabled "Display power saving technology" in Intel Graphics Settings, it seems like it fixed it, I'll restart my laptop to check if it's really gone, I'll update after I restart

[ThePCRunners]

It worked! Thanks a lot for your help @Twilight, Without you I wouldn't have figured it out!

[Ashleyyyy]

4 minutes ago, ThePCRunners said:

I just disabled "Display power saving technology" in Intel Graphics Settings, it seems like it fixed it, I'll restart my laptop to check if it's really gone, I'll update after I restart

yeah that's the setting lol, i don't have a machine with intel graphics on hand so i had to tell you from memory. i'm glad it worked though.