Question Lenovo ThinkPad T410 - Image display problems

Mar 27, 2019
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Hi,
after watching videos for some time the screen is showing vertical colored lines.
I tried to stress the laptop (CPU, GPU, RAM, Disk) but nothing happens. It looks like it only does this while watching videos (with VLC).

It is not mine so I don't really know how it acts while doing other stuff like browsing the web or office stuff.
The customer said that sometimes he gets crashed (BSOD).

Thanks!