Laptop doesnt turn on

[keylogia]

2 weeks ago the hinges on my Acer Aspire E1-571 broke completely and i tried to fix them, however one screw was stuck and I had to apply pressure which broke a small part on the top case near the power button. The broken part was just plastic so I dont think i destroyed anything. After fixing the hinges, I reassembled the laptop but it didn't turn on at all. However it did turn on with the battery so I knew the problem was with the dc jack - one cord was cut. I had to buy a new one, which I got today but the laptop still doesnt turn on. This time even with the battery which is weird cause it did turn on with the battery and I havent touched the laptop since that time. Also I changed the thermal paste today- dont know if that matters.

By the way since I have 2 acer laptops and they use the same charger, to test the broken laptop I take the charger from the good one and after that the charger doesnt work on the good one too. I have to completely unplug it 2-3 times until it works again

 

[Laptop_Nerd]

Hi,

Please do try these troubleshooting steps that may help. Chances are either the motherboard has failed inside the laptop.
- Start by doing a hard reboot, remove the battery and unplug the AC adapter then press and hold the power button for 20 seconds then try booting it up again.
- If this will not work, do test the AC adapter if it's working properly. Remove the battery and power the laptop with just the AC adapter connected and see if it will boot up or not. do also try a different AC adapter that has the same voltage and see if it will work or not.
- Proceed with reseating the RAM's if trying a different AC adapter will not work, remove them all for couple of seconds then put them back in making sure everything is seated properly.
- If it will still not work, connect an external monitor and see if you'll get any display from it. If there's a display on the external monitor that could mean that the problem is the built in display.
- But if there's still no display on the external monitor that means the problem lies in the Motherboard.

 

[keylogia]

already done these. The problem is in the MB