"My Asus TP500LA Not Turning On?"に関する回答If you have dropped it on the ground several times, it can be a loose connection to the power button board. There is a flat white cable that connects the motherboard from the headphone jack side to the power button side. Make sure the cable is plugged in and LOCKED DOWN! I fixed my daughter's Asus PC that way. The lock is tiny and may look it is connected!