Laptop suddenly shuts down and screen glitches. Help!(Predator Helios G3-572 )

Saad98

I have Acer Predator Helios G3-572. Suddenly it shuts down when I unplug the charger. This happens sometimes. Along with this, it happens when I lift the laptop from one hand. The screen glitches; like it shuts down and resets ever program after next start. But when I lift the laptop, the glitch is like it shows small white boxes flickering all over the screen. After that I have to manually shut the laptop holding the power button or itself shuts down. I really need help. Also, while holding the laptop something click sounds can be heard and felt somewhere which is not specific where. T_T
I really need help, can I fix it myself?

xapim

Saad98 Check the ram compartment door if the power kill switch its properly pressed down when the door is screwed in case of doubt add some layers of electrical tape just to make sure its pressed and also check if all chassis screws are properly tighten

Saad98

xapim said:

Saad98 Check the ram compartment door if the power kill switch its properly pressed down when the door is screwed in case of doubt add some layers of electrical tape just to make sure its pressed and also check if all chassis screws are properly tighten

I have ever opened this laptop before though and by shutdown means it powers off directly; no windows shutdown animation or so and it takes to power on too. Sometimes, even if it's on full battery charge, I need to plug the adapter to power on the laptop. Are there any video(s) you know @xapim which can guide me through whatever you said visually?