I used my laptop last night no problem. I closed the lid, and I assume it went into sleep mode. I went to turn it on today and it flashed on with all the lights and immediately turned off. I've checked the power supply with a multimeter and it's fine. I've tried a static discharge, but nothing. Sometimes it will turn on and off if and only if I have the battery in it. Also the chaging light is on when plugged in. I've seen posts about it being the motherboard, but when it flashes on it seems like it will start but that battery is dead or something. What else could it be?