Hello All,
After a windows update the laptop scree doesn't turn on, is an Acer Nitro 515-43, I did update and shutdown, then after like 5 minutes I opened the laptop to clean the dust, only disconnected the battery, cleaned the dust put it back together, press the power button, keyboard lights are on, drive activity led is on, battery chargers, fans going but the screen remains black; tried the FN + F5 | F6 key combination but nothing; an external Display doesn't work, I already tried that along with many tricks found on several forums that all said the same, just press the power button for 20 - 30 seconds for the battery reset, or reseat the RAM.
Help appreciated