Recently, we updated the RAM modules of a Lenovo Legion Y520 from 16GB (2x8GB) to 32GB using two HyperX Impact DDR4 16GB, 2400MHz CL14 SODIMM modules.
Right after installing the new modules, after power on the laptop it would show a black screen, the fans would work at full speed but nothing else would happen. We tried placing the old RAM back inside but with no success, the same bad behavior would occur.
Since the battery of this laptop is bolted onto the chassis we thought that we might have to give it a “hard restart” or something to get it started.
Our solution
1) We powered off the laptop by long pressing the power button. 2) Then we released the button and long pressed it again until the laptop powered on and off again.
The next time we powered on the laptop it was working perfectly again!!
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