Hi friend,
Kindly reset ur bios..otherwise properly fix RAM.
METHOD 1:
Step1: turnoff ur laptop
Step2:remove ur battery
Step3:hold on power button 30sec
Step4:after directly connect the charger trun on ur laptop its working .after connect battery.
METHOD 2:
First u identify ur RAM part of the ur laptop.
Just remove ur ram and clean tha pins smoothly.
After re insert the RAM check it ..working or not.
If u any doubt text me my number:+919524629460 whatsapp