N3rdR4ge :
generally there is a hole the size of a pin on the bottom of laptops with built in batteries to reset them.
It worked for me! I recently bought a new laptop Acer v3-574g-74bc and it won't power on and I don't know why. It's working perfectly one night, then the next day it won't turn on. I surrendered the unit to the store I bought this from, then waited for like 2 months to get it repaired. But the problem happened again! So I did some research, then found this thread. My laptop has a small hole at the back, then I just pressed for a few seconds using my iPhone's sim ejector, then booom! It turned on! Thank you so much, I created an account just to thank you. You saved me time from waiting for another 2 months getting my laptop repaired. Very simple fix indeed!