This is a 8 years old laptop, but it has this recurring problem of not turning on with lights on. In the past, I can turn it on with next attempt after a few minutes or hours. Nowadays, I am not able to turn it on even after a few days. The lights for power button, f2 and caps lock are on. However, black screen. I have tried:
# Hard reset.
# Opening up the back, and disconnect and reconnect the battery.
# Combination keys of esc+f2+caps lock+ power key, which suppose to prompt BIOS shared from somebody in YouTube of same model. After doing it, the lights of motherboard will not turn off when plugged in.
I was able to update Windows a few days ago when I was able to turn it on. Thought the problem was due to me not updating, thought I fixed it. I did a PC health report, and remembered that it has a battery health of 55%. I have academic files in it, and I hope to able to fix it. Please guide me.