Question 2016 Lenovo Thinkpad 13 random black screen issue

Aug 13, 2020
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My Lenovo Thinkpad 13 has recently been randomly (after anywhere from 30-90 minutes of functionally normally) coming up with a black screen. However, the laptop is still on as the Thinkpad light is on and the fan turns on high when this occurs. I have to turn off the laptop and turn back on to regain functionality. Sometimes when the Laptop shows the blackscreen, flashing white boxes appear for several seconds and there is a crackling sound. I have a suspicion from what else I have read that the GPU may be to blame, but it seems strange that the computer would function for so long in the intermittent spurts.

Screen has been replaced twice, but whole laptop has been functioning fine until only a few days ago

Anyone have any idea what this could be? I know Lenovos have a relatively common black screen issue, but this seems a little more intricate.

Specs:

ThinkPad 13 Signature Edition
Intel Core i5-6300U CPU @ 2.40GHz
2.50 GHz
RAM- 8 GB
Integrated HD Graphics 620

Thank you!
 

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