I have an HP pavilion ze1210 notebook that is 2 1/2 yrs old, all original AMD Athlon 256 mem dvd I set the sleep and hibernate settings to shorter times (5-10 minutes) left and when I came back it was totally dead. I don't know if this is a coincidence or if something bigger is wrong. I had the power cord checked & it is OK. The battery was at 96% when last checked and even removed it and tried just AC and still no lights or sounds. Put battery back in and with ac plugged in the fully charged light comes on then when I hit the power button the blue power on button flashes for a second and then nothing. I have to reset the button underneath with a paper clip to get the ac green light to come on again. I push the power button and blue power on flash then nothing again. Can it stay in sleep or hibernate? Guy at Best Buy thinks it might be done for. And one online forum sounds like the motherboard. Any suggestions?