Having problems with your HP Compaq Presario C502US Notebook ?

I have a 2-year old compaq presario c502us laptop. All of sudden, it couldn't be powered on anymore. I tried to use the power cord and battery only. When pressing the power button, nothing worked. Is this because something is bad on the motherboard or battery/power supply issue?

Answers :

Clear bios by replacing small battery on mainboard for 10 haurs and then power on,
\015\012if dosent worked tell me to give you anoyher solution
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