回复：you need give out more detail

thanks for your response.

here are the info on my computer. it is dell inspiron 8200. I bought it 1.5 years ago so the one year warrant just expired. I left it on in my dorm as usual the day before yesterday, but when i came back from class, i fount the power was off. I tried to turn it on, but i could not do so. When i press the power button, the green power light was on briefly and off automatically.
TIA