Random display freezing

Lopimank · July 2, 2020

Hello there tech people,

I need some advice on how to solve a problem that recently appeared with my laptop.

I have a Lenovo Legion Y520 from 2017,the model with a GTX 1050Ti, an Intel i7 7700HQ with 2.8GHz , 8GB of RAM and 1TB of HDD.

I have done multiple upgrades to my laptop over the years,I've replaced my display with a 120Hz display from a different lenovo laptop,added a new 8GB of RAM for a total of 16,removed the old HDD and added a 500GB WD M.2 SSD instead.

Now everything worked perfectly and still works ,but I recently started using a second monitor.I got an older display from my brother that he doesn't use anymore,it has a 1.4 HDMI cable is 25 inches and only 60Hz refresh rate,but it's more than enough for me.With the monitor connected both my laptop display and my monitor freeze for half a second to about 2 seconds within a random interval.This happens a lot more often when playing games especially.

If I use the power saving mode or balanced mode it happens less often,about 10% for balanced and about 20% for power saving mode,but using this method cripples my ability to play my games as I get lower FPS this way.I'm not overclocking anything as it might create even more instability but if I unplug my monitor everything works perfectly while gaming even on performance mode.

I'm considering either replacing my power adapter,it has max power output of 120W, or maybe replacing the battery,maybe I need to replace both to not damage any parts.

I want some opinions on this matter as to how to proceed.