Ok, so this morning in class my g53 laptop suddenly turned off without a warning. At first I thought it might of run out of power but it was plugged in. So I turned it back on, and all was fine for about 5 min after which it turned off instantly again without warning.
After this I left it alone for a few hours. I managed to turn it back on one last time later during the day but again it only lasted for a few minutes and now it won't power on at all. The only thing I can get it to do is flash the power button light for a split second when I press it and that is it.
I've tried the "hold power button with battery unplugged for 15-30 sec" trick, without any luck 😞
From your description, it sounds like your power supply has failed and no longer charges the battery. Do you see an orange LED indicating the battery is charging, or a green LED indicating the battery is charged? Or no LED?
If green, I would open the bottom of the laptop and attempt to reseat memory and HDD(s). I've heard of this bringing a dead system back to life from threads in this forum.